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8/19/2019 Phoenics Ch1 2 3
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PHOENICSPHOENICS
Computer Simulation of Fluid Flow, Heat Flow,Chemical Reactions and Stress in Solids. CHA
Minkasheva Alena
Thermal Fluid Engineering Lab.Department of Mechanical EngineeringKangwon ational !niversit"
#$$%.$&.$'(art )
Application of Environment *patial +nformation*"stem
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Contents
,hapter ). (- E +,* verview1. What PHOENICS is2.The components of PHOENICS
2.1 The main functions of PHOENICS2.2 The structure of PHOENICS2.3 The inter-communication es2.! Ho" the pro# em is $e ne$2.% Ho" PHOENICS ma&es the pre$ictions
2.' Ho" the resu ts are $isp a(e$2.) PHOENICS options
3. Ph(sica content of PHOENICS!. *athematica features of PHOENICS
!.1 +aria# es
!
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Contents
!.2 Stora,e!.3 ri$s!.! The a ance E/uation!.% 0u i iar( E/uations
!.' So ution of E/uations!.) oun$ar( Con$itions
%. Simu ation of mu ti-phase o" in PHOENICS'. Tur#u ence mo$e s in PHOENICS
). a$iati4e-heat-transfer mo$e s in PHOENICS5. Chemica -reaction processes in PHOENICS6. Simu taneous so i$-stress ana (sis17. o$(- ttin, in PHOENICS
11. PHOENICS 0pp ication
"
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Contents
,hapter #. The /irtual01ealit" +nterface1. + -E$itor
1.1 What the +irtua - ea it( E$itor creates1.2 8omain 0ttri#utes *enu
1.3 O#9ect *ana,ement Pane1.! O#9ect T(pes an$ 0ttri#utes1.% The + E$itor Contro Pane
2. + +ie"er
,hapter 2. (- E +,* ApplicationE3ample 4*imulation of ,ontaminantFlow5Pre-Processor + -E$itor
#
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Chapter !Chapter !
PHOENICS O$er$iew
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6 (- E +,* is a general0purpose softwarepackage which predicts 7uantitativel"8
: ho" ui$s ;air< "ater< steam< oi < # oo$< etc= o" in an$aroun$>
en,ines process e/uipment #ui $in,s
human #ein,s a&es< ri4er an$ oceans< an$ so on
: the associate$ chan,es of chemica an$ ph(sicacomposition
: the associate$ stresses in the immerse$ so i$s
6 4(- E +,*5 0 (arabolic -"perbolic r Elliptic
umerical +ntegration ,ode *eries
!. %hat PHOENICS is !
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!. %hat PHOENICS is
6 (- E +,* is emplo"ed b"8 : scientists for interpretin, their e perimenta
o#ser4ations
: engineers for the $esi,n of aircraft an$ other 4ehic es<
an$ of e/uipment "hich pro$uces po"er or "hich processesmateria s
: architects for the $esi,n of #ui $in,s
: environmental specialists for the pre$iction< an$ ifpossi# e contro < of en4ironmenta impact an$ ha?ar$s
: teachers an$ students for the stu$( of ui$ $(namics<heat transfer< com#ustion an$ re ate$ $iscip ines
6 (- E +,* is a 4,FD code5
"
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• (- E +,* performs three main functions8
). (roblem de9nition :pre0processing;in "hich the user prescri#es the situation to #e
simu ate$ an$ the /uestions "hich are to #e ans"ere$
#. *imulation :data0processing; #( means of computation< of "hat the a"s of scienceimp ( in
the prescri#e$ circumstances
2. (resentation :post0processing; of the resu ts of the computation< #( "a( of ,raphica
$isp a(s< ta# es of num#ers< an$ other means
". &he Components of PHOENICS".! &he main functions of PHOENICS
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"." &he structure of PHOENICS !
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"." &he structure of PHOENICS
@ PHOENICS has a Ap anetar(B arran,ement< "ith a centracore of su#routines ca e$ E0 TH< an$ a S0TE ITEpro,ram< "hich accepts inputs throu,h the +irtua
ea it( ;+ = interface correspon$e$ to a particu ar o"simu ation.
@ E0 TH an$ S0TE ITE are $istinct pro,rams.
@ S0TE ITE is a $ata-preparation pro,ramD it "rites a $atae "hich E0 TH rea$s.
@ PHOENICS users "or& main ( "ith S0TE ITE< #ut the(can access E0 TH a so in contro e$ "a(s.
@ O N8 is the E0 TH su#routine "hich users access"hen incorporatin, specia features of their o"n.
"
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".# &he inter'communication files
• Fi es "hich are use$ for communication #et"eenmo$u es
▪ (! , the user-readable input-data file, which is written in PI) , thePHOENICS Input Language, and is the main expressi n f what
the user wishes t achie!e"▪ EAR*A& , an #SCII file which expresses in E#$%H-
understandable f rm what the user has prescribed b& wa& f '("
▪ PHI , which is written b& E#$%H in acc rdance with a f rmat whichenables PHO%ON, #)%OPLO% and the *iewer t displa& theresults f the c mputati n graphicall&"
▪ RES+)& , which is an #SCII file expressing the results in tabularand line-printer-pl t f rm
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". How the pro-lem is defined
▪ geometr"
shapes< si?es an$ positions of o#9ects an$ inter4enin,spacesD
< materialsthermo$(namic< transport an$ other properties of the
ui$s an$ so i$s in4o 4e$
< processesfor e amp e> "hether the materia s are inert or reacti4eD"hether tur#u ence is to #e simu ate$ an$ if so #( "hatmo$e D"hether temperatures are to #e compute$ in #oth ui$s
an$ so i$sD"hether stresses in so i$s are to #e compute$< grid
the manner an$ neness of the su#-$i4ision of space an$time<
"hat is ca e$ the G$iscreti?ationG: other numerical :non0 h sical; arameters
• (roblem de9nition involves making statements ab
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". How PHOENICS ma/es the predictions
▪
e pressin, the re e4ant a"s of ph(sics an$ chemistr(
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".0 How the results are displa1ed
▪ It has its o"n stan$-a one ,raphics pac&a,e ca e$PHOTOND an$ it can a so e port resu ts to such thir$-part(
pac&a,es as TECP OT< 0+S< an$ FE*+IEW.▪ PHOENICS can a so ta&e the resu ts of its o" pre$ictions
#ac& into the same +I T 0 - E0 ITJ en4ironment as isuse$ for settin, up the pro# em at the start.
▪
Numerica resu ts are pro4i$e$< in the ES T e. This
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".2 PHOENICS options3
1. 0$4ance$-mu tiphase2. o$(- tte$-coor$inate
3. 0$4ance$-chemistr(
!. ENT 0 ;partic e trac&in,=
%. *u ti-# oc& an$ ne-,ri$-em#e$$in,'. *u ti- ui$
). 0$4ance$-a ,orithms
5. *I 0 < the mu ti-,ri$ so 4er
6. P 0NT fortrani?er
17. 0$4ance$-ra$iation
11. Simu taneous-so i$-stress
12. 0$4ance$-tur#u ence
13. T"o-phase
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#. Ph1sical content of PHOENICS
@ aminar or tur#u ent
@compressi# e or incompressi# e
@stea$( or unstea$(@chemica ( inert or reacti4e
@sin, e- or mu ti-phase
@in respect of therma ra$iation>
- transparent
- participatin, #( "a( of a#sorption an$ emission
- participatin, #( "a( of scatterin,
6 (- E +,* simulates =ow phenomena which are8
!
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@empt( of so i$s< or
@"ho ( or partia ( e$ #( ne (-$i4i$e$ so i$s at rest ;asin Lporous-me$iumL o"s=< or
@partia ( occupie$ #( so i$s "hich are not sma compare$"ith the si?e of the oca computationa ce s
6 The space in which the =uid =ows ma" be8
The so i$s ma( interact therma ( "ith the so i$s.
Such immerse$ so i$s can a so participate in ra$iati4e heat
transfer. The therma ( an$ mechanica (-in$uce$ stresses an$strains in the immerse$ so i$s can a so #e compute$ #(PHOENICS.
The thermo$(namic< transport ;inc u$in, ra$iati4e=
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@$epen$ent - the su#9ect of a conser4ation e/uation
@au i iar( - constant< or $eri4e$ from an a ,e#raice pression
6 /ariables ma" be thought of as being8
.! 4aria-les
6 Dependent8@*calars8
- Pressure
- Temperature
- Entha p(
- *ass fractions
- +o ume fractions
- Tur#u ence /uantities
- +arious potentia s
@/ectors8
- +e ocit( reso utes
- a$iation u es
- 8isp acements
. athematical features!
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.! 4aria-les
6 Au3iliar"8@*calars8
- 8ensit(
- +iscosit(
- Con$ucti4it(
- 8i usi4it(
- Speci c heat
- Therma e pansion coe cient
- Inter- ui$ transport
- 0#sorpti4it(
- Compressi#i it(
@/ectors8
- +arious non-isotropic
properties- ra4it( forces
- Other #o$( forces
"
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.! 4aria-les
6 The 7uantities de9ning the problem geometr"can also be divided into scalar and vector categories8
6 >eometric8@*calars8- Ce 4o umes
- +o ume porosit( factors
- Inter- ui$ surface areaper unit 4o ume
@/ectors8
- Ce center coor$inates
- Ce corner coor$inates
- Center to center$istances- Ce surface areas
- Ce area porosities
#
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@*calars - These are store$ at the center points of si -si$e$
ce s< "ith 4a ues suppose$ to #e t(pica of the "ho ece .
@/ectors - These are store$ at the center points of the sice faces
." Stora5e
6 omenclature 0 compass-point notation> P M Ce center
N
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.# 6rids
6 *torage locations +ector /uantities are compute$ #( reference to ce s "hichare sta,,ere$ "ith respect to the sca ar ce s
3 4e ocities an$ 1 sca ar share the same ce in$e;I
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.# 6rids
6 T"pes of >rid PHOENICS ,ri$s are structure$ - ce s are topo o,ica (Cartesian #ric& e ements6 (- E +,* grids ma" be 8 - Cartesian
- C( in$rica -po ar
- o$( tte$ i.e. ar#itrari ( cur4i- inear< ortho,ona or non-ortho,ona
The ,ri$ $istri#ution can #e non-uniform in a coor$inate$irections6 For c"lindrical0polar coordinates8
- ;or I= is a "a(s the an,u ar $irection
- J ;or R= is a "a(s the ra$ia $irection
- ;or = is a "a(s the a ia $irection
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@mass
@momentum
@ener,(@materia ;ie chemica species=
@other conser4e$ entities ;e.,. e ectrica char,e=
o4er $iscrete e ements of space an$ time< i.e. L nite4o umesL &no"n as Lce sL
6 The e7uations solved b" (- E +,* are thosewhich e3press the balances of8
. &he 7alance E8uation
6 ?asic form The #asic #a ance< or conser4ation e/uation is 9ust>
Outfow rom cell - Infow into cell = Net sourcewithin cell
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. &he 7alance E8uation
6 Terms The terms appearin, in the #a ance e/uation are>
- Con4ection ;i.e.< $irecte$ mass o"=
- 8i usion ;i.e.< ran$om motion of e ectrons< mo ecu es
or ar,er structures e.,.< e$$ies=- Time 4ariation ;i.e.< $irecte$ motion from past to
present - accumu ation "ithin a ce =
- Sources ;e.,.< pressure ,ra$ient or #o$( force for
momentum< chemica reaction for ener,( or chemicaspecies=
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. &he 7alance E8uation
6 The >enerali@ed Form The sin, e phase conser4ation e/uation so 4e$ #(PHOENICS can #e "ritten as>
"here> - the 4aria# e in /uestion
- $ensit(
- 4ector 4e ocit(
- the $i usi4e e chan,e coe cient for
- the source term
φ φ φ
φ ρ ρφ
S xU xt = ∂∂Γ−∂∂+∂∂ )(
ρ
φ ΓU
φ S
φ
φ
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. &he 7alance E8uation
6 (articular Forms
"here < are the tur#u ent an$ aminar 4iscosities<
, are the tur#u ent an$ aminar Pran$t Schmi$tNum#ers
wvu ,,=φ )( LT ν ν ρ φ +=Γ
...+++∂∂−= friction gravity
x pS
hφ
h=φ
+=Γ
L
L
T
T
Pr Pr
ν ν ρ φ
...++−= sourcesheat Dt Dp
S φ
T ν Lν
T Pr
LPr
MomentumEnthalp"
1=φ 0=Γφ
sourcesboundaryS += 0φ
,ontinuit"
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. &he 7alance E8uation
6 umerical solution@ The #a ance e/uations cannot #e so 4e$ numerica ( in
$i erentia form. Hence< PHOENICS so 4es a nite-4o ume formu ation of the #a ance e/uation.
@ The F+ELs are o#taine$ #( inte,ratin, the $i erentiae/uation o4er the ce 4o ume.
@ Interpo ation assumptions are re/uire$ to o#tain sca ar4a ues at ce faces an$ 4ector /uantities at cecenters.
@ No Ta( or series e pansion or 4ariationa princip e isuse$
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. &he 7alance E8uation
6 Finite /olume Form0fter inte,ration< the F+E has the form>
"here>
The nei,h#our in&s< the aLs< ha4e the form
con4ection $i usion transient
terms sourceaaaaaaaa T T L L H H W W E E S S N N p p +++++++= φ φ φ φ φ φ φ φ
T L H W E S N p aaaaaaaa ++++++=
dt densityvolume
ncedista
t coefficienexchangeareadensityvelocityarea
×+−×+××
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. &he 7alance E8uation
6 ,orrection Form The e/uation is cast into correction form #efore so ution.
In correction form< the sources are rep ace$ #( the errorsin the rea e/uation< an$ the coe cients ma( #e on (appro imate. The corrections ten$ to ?ero as con4er,ence
is approache$< re$ucin, the possi#i it( of roun$-o errorsa ectin, the so ution.
The nei,h#or in&s>
- Increase "ith in o" 4e ocit(< ce area< ui$ $ensit(
an$ transport coe cient
- 8ecrease "ith interno$a $istance
- 0re a "a(s positi4e
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. Au9iliar1 E8uations
To c ose the e/uation set< au i iar( e/uations must #epro4i$e$ for>
@ Thermo$(namic properties> $ensit(< ;entha p(< entrop(=
@ Transport properties> 4iscosit(< $i usi4it(< con$ucti4it(
@ Source terms> chemica &inetic a"s< ra$iationa#sorption< 4iscous $issipation< Corio is etc.
@ Interphase transport> of momentum< ener,(< mass <chemica species etc.
There ma( a so #e Larti cia L au i iar( e/uations< such as
@ Fa se transients ;for re a ation=
@ oun$ar( con$itions
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@computin, the im#a ances of each of the entities for eachce
@computin, the coe cients of inear;ise$= e/uations "hich
represent ho" the im#a ances "i chan,e as a conse/uenceof ;sma = chan,es to the so 4e$-for 4aria# esD@so 4in, the inear e/uationsD@correctin, the 4a ues of so 4e$-for 4aria# es< an$ of au i iar(
ones< such as ui$ properties< "hich $epen$ upon them>
@repeatin, the c(c e of operations unti the chan,es ma$e tothe 4aria# es are su cient ( sma
6 ?ecause the whole e7uation s"stem is non0linearthe
solution procedure is iterative consisting of thesteps of8
@tri-$ia,ona matri a ,orithm@;a 4ariant of= StoneLs LStron, ( Imp icit 0 ,orithmL<
@con9u,ate-,ra$ient an$ con9u,ate-resi$ua so 4ers
6 /arious techni7ues are used for solving the lineare7uations8
.0 Solution of E8uations
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.2 7oundar1 Conditions
6 >eneral formoun$ar( Con$itions are represente$ in PHOENICS asineari?e$ sources for ce s a$9acent to #oun$aries>
is terme$ the COEFFICIENT.
is terme$ the +0 E.
is a$$e$ to <an$ is a$$e$ to the HS of the e/uation for
( ) p ! ! aS φ φ φ −=
! φ
! ! a φ pφ
! p
! ! hh "
aa
aa
+
+= ∑ φ φ φ
! a
! a
pa
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.2 7oundar1 Conditions
6 (articular formsFor a e$ 4a ue #oun$ar(< is ma$e 4er( #i,. Thee ect is>
For a e$ u #oun$ar(< is ma$e 4er( sma < an$
is set to the re/uire$ u .
inear an$ non- inear con$itions can #e set #( appropriate
! ! a φ
! a
! p
! ! hh " aa
aa
++= ∑ φ φ φ
!
! ! " anumber small very
anumber small very+
+= φ φ
! " φ φ =
tinyatiny
sourcetinya
p
hh
" +
+=∑ φ
φ p
hh " a
sourcea∑ += φ φ
! φ
! a
! a
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. Simulation ofmulti'phase flow in PHOENICS
@ suspensions of oi $rop ets in "ater< or of "ater $rop etsin oi D
@ the air-sno" mi ture in an a4a ancheD
@ the san$-air mi ture in a san$stormD
@ the Gmush( ?oneG of mi e$ so i$ an$ i/ui$ meta in acastin, mou $D
@ the "ater-air mi ture in a sho"er #athD
@ the ,as-oi -"ater mi ture< in the pores "ithin roc&< in apetro eum-reco4er( processD
@ $rop ets of fue oi mi e$ "ith hot ,ases in a com#ustion
6 E3amples8
6 Multi0phase0=ow phenomena are< for PHOENICS<those in "hich< "ithin the sma est e ement of space "hichis consi$ere$;the computationa ce = se4era $istin,uisha# e materia sare present .
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1. 0s two inter0penetrating continua < each ha4in, ateach point in the space-time $omain un$er consi$eration<its o"n>- 4e ocit( components<
- temperature<- composition<- $ensit(<- 4iscosit(<- 4o ume fraction< etc
2. 0s multiple inter0penetrating continua ha4in, thesame 4ariet( of properties
3. 0s two non0interpenetrating continua separate$ #( afree surface
!. 0s a particulate phase for "hich the partic e tra9ectoriesare com ute$ as the mo4e throu h a continuous ui$
6 *imulation methods in (- E +,*8
. Simulation ofmulti'phase flow in PHOENICS
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0. &ur-ulence models in PHOENICS
@ The o"s "hich PHOENICS is ca e$ upon to simu ate are<more often than not< tur#u ent< #( "hich is meant that the(e hi#it near-ran$om uctuations< the time-sca e of "hich is4er( sma compare$ "ith the time-sca e of the mean- o"<an$ of "hich the $istance sca e is sma compare$ "ith the
$imensions of the $omain un$er stu$(
6 A broad0brush summar" of the satisfactorinessof the most0widel"0used turbulence models is8- for pre$ictin, time-a4era,e h($ro$(namic phenomena
an$
the macro-mi in, of ui$s mar&e$ #( conser4e$ sca ars<the mo$e s are Gnot #a$GD #ut
- for the simu ation of micro-mi in,< "hich is essentia ifchemica - reaction rates are to #e pre$icte$< the( are 4er( poorin$ee$
!
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@heat an$ mass transfer@chemica reaction
@mu ti-phase e ects
6 Further distinction between models can bemade b"
reference to their handling :or non0handling; of8
6 Turbulence models in (- E +,* can beclassi9ed as
belonging to one or other of three groupsnamel"8
1. those "hich emp o( the E ecti4e +iscosit( H(pothesis;E+H=
2. those "hich speci ca ( 0+OI8 the E+H
3. those "hich ma( ma&e some INESSENTI0 use of theE+H
0. &ur-ulence models in PHOENICS "
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Sub-group 1.1 in which no diferential equations are used+ prescri-ed E4 - E* is gi!en a unif rm !alue+ )4E) - E* is c mputed fr m the !el cit&, the laminar !isc sit& and the
distance fr m nearb& walls+ Prandtl mi9in5'len5th - E* is c mputed fr m the !el cit& gradient length
and a prescribed length scale
+ 4an'*riest - as f r Prandtl mixing length, but with l w-$e&n lds-numberm dificati n
Sub-group 1.2 in which one diferential equation is used
+ Prandtl ener51 - E* is prescribed-length S'$% .E/ where .E is energ&f turbulence c mputed fr m a differential transp rt e0uati n
Sub-group 1.3 in which 1 or 2 diferential equations areused
+&%O')A:ER ;E'EP - as f r .E-EP except that nl& the .E e0uati n iss l!ed near the wall, where the length scale is treated as 1n wn
6 >roup ) 0 which emplo" the E/-
0. &ur-ulence models in PHOENICS #
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Sub-group 1.4 in which two diferential equations are
used+ /'epsilon
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+ RE:NO)*S'stress - E* is n t used" Instead, the shear stresses arethemsel!es the dependent !ariables f differential transp rt e0uati ns,usuall& six in number
6 >roup # 0 not emplo"ing the E/-
+ Sma5orins/1 - E* is used nl& t res l!e the small-scale subgrid-scalem ti n, the main transfers f m mentum being c mputed b& perf rmingthree-dimensi nal time-dependent s luti ns f the Na!ier-St 1es e0uati nswith the finest aff rdable space and time sub-di!isi ns
+ &wo'fluid - E* is either n t used at all, r is deduced fr m the l cal !el cit&differences between the tw intermingling fluids which are used t describethe turbulent fluid mixture
+ ulti'fluid - as f r %6O-roup 2 0 which ma" or ma" not emplo" the E/-
0. &ur-ulence models in PHOENICS
$ f
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2. Radiati$e'heat'transfer modelsin PHOENICS
6 +MME1* L method is8@ computationa ( ine pensi4eD@ capa# e of han$ in, the "ho e ran,e of con$itions from
optica (-thin ;ie transparent= to optica (-thic& ;ieopa/ue= me$iaD
@ mathematica ( e act "hen the ,eometr( is simp eD an$
@ ne4er ,ross ( inaccurate
@ 0 metho$ "hich is uni/ue to PHOENICS< an$ is especia (con4enient "hen ra$iatin, surfaces are so numerous< an$4arious ( arran,e$< that the use of the 4ie"-factor-t(pemo$e is impractica ( e pensi4e< is +MME1* L
h l
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>. Chemical'reaction processesin PHOENICS
6 ,hemical reactions are simulated b" (- E +,*in several wa"s including8
@ *,1* - Gthe Simp e Chemica ( eactin, S(stemG #ui tinto user-accessi# e Fortran co$in,
@ ,1EK - a set of user-ca a# e su#routines "hich han$ ethe thermo$(namics an$ nite-rate or e/ui i#riumchemica &inetics of comp e chemica reactions
@ ,-EMK+ # - the pu# ic-$omain co$e to "hichPHOENICS has an interface
@ (LA T - "hich ena# es users to intro$uce ne" reactionschemes an$ materia properties #( "a( of formu ae
intro$uce$ into the $ata-input comman$ e< K1
@ PHOENICS can han$ e the com#ustion of ,aseous< i/ui$;e.,. oi -spra(= an$ so i$ ;e.,. pu 4eri?e$-coa = fue s.
? Si l lid'
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?. Simultaneous solid'stressanal1sis
6 Engineering e3amples of =uidBheatBstressinteractions8@ ,as-tur#ine # a$es un$er transient con$itions
@ Gresi$ua stressesG resu tin, from castin, or "e $in,
@ therma stresses in nuc ear reactors $urin, emer,enc(shut-$o"n
@ manufacture of #ric&s an$ ceramics
@ stresses in the c( in$er # oc&s of $iese en,ines
@ the fai ure of stee -frame #ui $in,s $urin, res
@ It is fre/uent ( re/uire$ to simu ate ui$- o" an$ heat-transfer processes in an$ aroun$ so i$s "hich are< part ( as aconse/uence of the o"< su#9ect to therma an$ mechanicastresses
@ Often it is the stresses "hich are of ma9or concern< "hi e the
ui$ an$ heat o"s are of on ( secon$ar( interest
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@ PHOENICS is ena# e to compute o"s aroun$ such#o$ies #( usin, G#o$(- tte$-coor$inate ;i.e. FC= ,ri$sG
!@. 7od1'fittin5 in PHOENICS
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@ PHOENICS possesses its o"n #ui t-in means of,eneratin, such ,ri$sD #ut it can a so accept ,ri$screate$ #( specia ist pac&a,es< for e amp e eo ri$
!@. 7od1'fittin5 in PHOENICS
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@ P0 SO a o"s o"s aroun$ cur4e$ #o$ies to #ecompute$ on cartesian ,ri$sD an$ the so utions are often
9ust as accurate as those compute$ on #o$(- tte$ ,ri$s.
!@. 7od1'fittin5 in PHOENICS
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!!. PHOENICS Application
). Engineering Application8@ 0erospace
@ 0utomoti4e
@ Chemica process
@ Com#ustion@ E ectronics
@ *arine
@ *eta ur,ica
@ Nuc ear@ Petro eum
@ Po"er
@ a$iation
@ Water etc.
!
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!!. PHOENICS Application
#. Environment Application8@ 0tmospheric po ution
@ Po ution of natura "aters
@ Safet(
@ Fire sprea$< etc.2. Architecture and building science
@ E terna o"s ; e.,. F o" aroun$ #us she ter=
@ Interna o"s ;e.,. +enti ation of a Concert Ha =
'. ther phenomena or features@ Ph(sica *o$e s
@ Chemica Processes
@ Numerica *etho$s
@ ri$ eneration< etc.
"
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Chapter "Chapter "
&he 4irtual'Realit1Interface
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!. 4R'Editor
▪ The +irtua - ea it( user interface assists users to set upo"-simu ation ca cu ations< "ithout ha4in, to earn the
PI . This $ata-input mo$e is ca e$ the + -E$itor
! ! %hat the 4irtual'Realit1 Editor
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!.! %hat the 4irtual Realit1 Editorcreates
▪ The + -E$itor recor$s the settin,s ma$e #( the user$urin, his e$itin, session in an 0SCII e &no"n as K1.
▪ This e can #e rea$< un$erstoo$ an$ e$ite$. sua (<ho"e4er< it "i simp ( #e store$ for ater use.
▪ In an( case< the o"-simu ation can #e,in imme$iate (< ifthe user "ishes< #ecause t"o other es "i a so ha4e#een automatica ( "ritten< one of "hich ;F0CET80T=con4e(s the necessar( ,eometrica information< "hi e theother ;E0 80T= carries e4er(thin, e se that the so 4ermo$u e nee$s to &no".
▪ The s"itchin, from the + -E$itor to the so 4er< an$ for thatmatter to an( other PHOENICS mo$u e< is ren$ere$particu ar ( eas( #( the pu -$o"n menus accessi# e from
the top #ar of the + -E$itor screen.
!
! ! %hat the 4irtual'Realit1 Editor
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.
•
The /10Editor is used for8: Settin, the si?e of the computationa $omainD
: 8e nin, the position< si?e an$ properties of o#9ects"hich are to #e intro$uce$ into itD
: Specif(in, the materia "hich other"ise occupies the$omainD
: Specif(in, the in et an$ out et #oun$ar( con$itionsD
: Specif(in, the initia con$itions< necessar( if the pro# emis a time-$epen$ent one< an$ $esira# e other"ise foreconom(D
: Se ectin, a tur#u ence mo$e < if the situation ca s for itD
: Specif(in, the neness of the computationa ,ri$D
: Specif(in, other parameters in uencin, the spee$ ofcon4er,ence of the so ution proce$ure
!.! %hat the 4irtual Realit1 Editorcreates "
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).# Domain Attributes Menu
: The *ain *enu is "here a the $omain-re ate$ settin,s<such as $omain si?e< 4aria# es so 4e$< ph(sica properties<numerica an$ output contro s are set. 0n( source "hichoperates o4er the "ho e $omain is a so set from here
: The main menu is reache$ #(>- c ic&in, the *ain *enu #utton on the han$-set
- c ic&in, the icon on the too #ar
- c ic&in, ASettin,s U 8omain attri#utesB on the top #ar of
the main ,raphics "in$o"
- $ou# e-c ic&in, the 8omain entr( in the O#9ect*ana,ement
Pane
) # Domain Attributes Menu
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: This is the top pane of the main menu< it can #e reache$ from
an( other pane #( c ic&in, on Top menu . It is the pane $isp a(e$"hene4er the *ain menu is acti4ate$ from the han$-set< an$ it isthe on ( pane from "hich it is possi# e to return to the main + -E$itor en4ironment
).# Domain Attributes MenuTop panel !
) # Domain Attributes Menu
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: The #uttons a on, the top of the pane a o" the settin, an$mo$i cation of the case. In ,enera < it is #est to start at the top
eft< an$ "or& from eft to ri,ht< as this minimises the chances ofmissin, out settin,s
).# Domain Attributes MenuTop panel "
) # Domain Attributes Menu
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).# Domain Attributes Menu>eometr"
: For Cartesian an$ Po ar co-or$inates< this is the same $ia o, thatis $isp a(e$ #( c ic&in, on the ri$ mesh #utton on the han$-set
) # Domain Attributes Menu
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: ,o0ordinate s"stem8 To,, es #et"een Cartesian< c( in$rica -po ar an$ o$(-Fitte$ ; FC=
).# Domain Attributes Menu>eometr"
) # Domain Attributes Menu
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< +nner radius ;on ( for c( in$rica -po ar= 8 Sets the inner ra$ius fora c( in$rica -po ar ,ri$
).# Domain Attributes Menu>eometr"
) # Domain Attributes Menu
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: Time dependence8 To,, es #et"een Stea$( an$ Transient
).# Domain Attributes Menu>eometr"
) # Domain Attributes Menu
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: Time step settings ;on ( for transient=> 8isp a(s a $ia o, formana,in, the time-step $istri#ution
).# Domain Attributes Menu>eometr"
).# Domain Attributes Menu
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< (artial solids treatment ;on ( for Cartesian=> This acti4ates thespecia treatment of partia (-# oc&e$ ce s< P0 SO
).# Domain Attributes Menu>eometr"
).# Domain Attributes Menu
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< (artial solids treatment settings > 8ia o, from "hich the min
an$ ma ui$ 4o ume fractions for P0 SO can #e set. 0n( ce in"hich the ui$ 4o ume fraction is #e o" the min 4a ue isconsi$ere$ fu (-# oc&e$< an$ an( ce in "hich it is a#o4e the mais consi$ere$ fu -open
).# Domain Attributes Menu>eometr"
).# Domain Attributes Menu
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< Auto Meshing > To,, es #et"een auto an$ manua meshin, ineach of the $omain $irections
).# Domain Attributes Menu>eometr"
).# Domain Attributes Menu
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< Domain si@e > Sets the tota e tent of the $omain in the < J an$ $irections. In c( in$rica -po ar co-or$inates< the si?e is set in
ra$ians
).# Domain Attributes Menu>eometr"
).# Domain Attributes Menu
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< umber of cells > Sets the tota num#er of ce s in the < J an$
$irections. If a re,ions are LSetL< or the ,ri$ is LautoL this 4a uecannot #e chan,e$ $irect ( as there are no LFreeL re,ions toaccommo$ate the chan,e
).>eometr"
).# Domain Attributes Menu
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< umber of regions > This $isp a(s the current num#er of re,ionsin each $irection. This can on ( #e chan,e$ #( mo$if(in, o#9ectsor mo$if(in, the to erance
)>eometr"
).# Domain Attributes Menu
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< Modif" region > This is the num#er of the re,ion se ecte$ formo$i cation. To mo$if( a $i erent re,ion< enter its num#er$irect ( an$ c ic& L0pp (L< or c ic& O < then c ic& on the ne" re,ion
)>eometr"
).# Domain Attributes Menu
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< *i@e > This $isp a(s the si?e ;in meters or ra$ians= of the re,ionse ecte$ for mo$i cation. The si?e of a re,ion can on ( #echan,e$ #( mo$if(in, o#9ects or mo$if(in, the to erance
)>eometr"
).# Domain Attributes Menu
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< Distribution > This to,, es #et"een (ower law an$>eometrical progression . It contro s ho" the ce s "ithin there,ion are space$
)>eometr"
).# Domain Attributes Menu
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< ,ell and (ower > This to,, es #et"een Free an$ *et .Free > the num#er of ce s can #e automatica ( a$9uste$ as thetota num#er of ce s is chan,e$< so as to &eep the ,ri$ as uniformas possi# e.*et > the num#er of ce s in this re,ion< an$ their $istri#ution< ha4e#een set #( the user an$ cannot #e automatica ( chan,e$
)>eometr"
).# Domain Attributes Menu
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< ,ells in region > This initia ( $isp a(s the num#er of ce sa ocate$ to this re,ion #( the automatic meshin, a ,orithm. Thenum#er of ce s in this re,ion can #e chan,e$ #( t(pin, in a$i erent 4a ue. Ce s "i #e ta&en from< or $istri#ute$ amon,stother LFreeL re,ions to &eep the tota num#er constant
)>eometr"
).# Domain Attributes Menu
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< (owerBratio > This sets the e pansion po"er< or ,eometrice pansion common ratio. The $efau t settin, of 1.7 ,i4es auniform mesh.Positi4e 4a ues mean that the e pansion ,oes from the start of there,ion to"ar$s the en$< ne,ati4e 4a ues mean the e pansionstarts at the en$ an$ ,oes to the #e,innin,
>eometr"
).# Domain Attributes Menu
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< *"mmetric > This to,, es #et"een o an$ Ces .If Ces < the e pansion speci e$ #( 8istri#ution an$ Po"er ratio isapp ie$ s(mmetrica ( from each en$ of the re,ion
>eometr"
).# Domain Attributes Menu
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< Edit all regions > This $isp a(s a $ia o, "hich sho"s a there,ion settin,s in a particu ar $irection an$ a o"s them to #echan,e$. This is "here the 0uto-meshin, parameters can #ea$9uste$
>eometr"
).# Domain Attributes Menu
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Models
: This pane contro s the 4aria# es to #e so 4e$< an$ the mo$e suse$
).# Domain Attributes Menu !
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Models
: E7uation Formulation
!
).# Domain Attributes Menu "
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: E7uation Formulation- The main choice is #et"een elliptic
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< *ingle B Multi0(hase
Models !
).# Domain Attributes Menu "
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: *ingle B Multi0(hase
This option s"itches #et"een sin, e an$ mu ti-phase operation. Ifthe $omain is occupie$ #( a sin, e ui$< "hich $oes not chan,ephase< or #( se4era ui$s "hich 0 E 0 W0JS SEP0 0TE8 #(so i$< the o" can #e treate$ as sin, e phase. If the ui$ chan,esphase< or there are se4era *I E8 ui$s< then the o" must #etreate$ as mu ti-phase.
The a4ai a# e options are>@ ne phase on ( one phase present ;or se4era comp ete (
separate$ ui$s=.
@ +(*A Full .This so 4es the fu momentum e/uations for t"ophases< a o"in, for inter-phase heat an$ mass transfer.
@ +(*A E7ual vel . This assumes that the 4e ocities of the t"ophases are a "a(s e/ua < #ut a o"s inter-phase heat an$ masstransfer.
@ Algebraic *lip . This so 4es re$uce$ e/uations for se4era$isperse$ phases in a carrier. Inter-phase heat an$ mass transferare not inc u$e$
Models
).# Domain Attributes Menu
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< Lagrangian (article Tracker :>E T1A; The partic e trac&er is an a ternati4e "a( of treatin, mu ti-phase
o"s.It is suita# e for $i ute suspensions< "here 4o ume-fraction e ectsare sma . Pac&ets of partic es are trac&e$ throu,h the $omain.Each pac&et represents a ar,e num#er of partic es fo o"in, thispath.
The partic es can e chan,e heat< mass an$ momentum "ith thecarrier ui$
Models
).# Domain Attributes Menud l
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< (ressure And /elocit"
This option s"itches ON or OFF the so ution for the pressure4aria# e P1< an$ the 4e ocities 1< +1 an$ W1. If the simu ation ist"o-phase< then the secon$ phase 4e ocities 2< +2 an$ W2 "ia so #e acti4ate$. If the ,ri$ $imensiona it( is chan,e$ ater< there/uire$ 4e ocit( component;s= "i #e a$$e$ or remo4e$ asnee$e$.Pressure an$ 4e ocit( must #e #efore it #ecomes possi# e tose ect *u ti-Phase or Free-Surface mo$e s
Models
).# Domain Attributes MenuM d l
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< Free *urface Models The a4ai a# e free surface mo$e s are>@ *calar e7uation @ -eight of li7uid
The Sca ar E/uation *etho$ ;SE*= is ,oo$ for o4erturnin, or#rea&in, interfaces< #ut is restricte$ to 4er( sma time steps.
Hei,ht of i/ui$ ;HO = can run stea$(-state< or "ith ar,er timesteps #ut cannot $ea "ith o4erturnin, interfaces
Models
).# Domain Attributes MenuM d l
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< Energ" E7uation
The ener,( e/uation can #e so 4e$ in one of t"o forms>@ Temperature ;TE*1 TE*2=< or@ Enthalp" ;H1 H2=
The entha p( form is often more suite$ to com#ustionapp ications< the temperature form to con9u,ate heat transfer.Interna (< the e/uation is a "a(s cast in entha p( form< so theunits of the sources are a "a(s Watts
Models
).# Domain Attributes MenuM d l
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< Energ" E7uation TotalB*tatic
( $efau t< the Temperature form is set to LTota L< the entha p(form to LStaticL. The static form inc u$es the su#stantia $eri4ati4eof the pressure an$ the &inetic heatin, terms in the ener,(conser4ation e/uation as a$$itiona source terms< the Tota form$oes not.
If the o" is hi,h ( compressi# e ;hi,h *ach num#er= the Temperature form shou $ #e s"itche$ to LStaticL other"iseincorrect so utions "i #e o#taine$. This is #ecause a thepropert( formu ae re/uire the static temperature.
The Entha p( form can #e use$ in LTota L form as on, as a suita# etemperature $eri4ation is se ecte$ in the properties pane
Models
).# Domain Attributes MenuM d l !
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< Turbulence Models
Models !
).# Domain Attributes MenuM d l "
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< Turbulence Models The a4ai a# e tur#u ence mo$e s are $i4i$e$ into the fo o"in,
,roups>@ LAM+ A1 - The o" is aminar an$ there is no tur#u ence
mo$e .
@ , *TA T0EFFE,T+/E - The tur#u ent 4iscosit( is constant. The $efau t settin, is 277 times the aminar 4iscosit(.
@ L/EL - enera ise$ en,th-sca e ?ero-e/uation mo$e < usefu"hen there are man( o#9ects an$ the ,ri$ is coarse.
@ KEM DL - C assica t"o-e/uation hi,h e(no $s num#er. &- ε mo$e
@ K M DL - o mo,oro4-Wi co t"o- e/uation &-f mo$e .sefu for transitiona o"s an$ o"s "ith a$4erse pressure
,ra$ients.
@ !*E1 - ser-$e ne$ mo$e for a$4ance$ users.
Models
).# Domain Attributes MenuM d l #
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< Turbulence Models
@ KE /ariants - Se4era 4ariants of the -E mo$e usua (,i4in, enhance$ performance for recircu atin, o".
- ECHEN - Chen- im t"o-e/uation &- ε mo$e .
i4es #etter pre$iction of separation an$ 4orte es.- E N - N $eri4e$ t"o-e/uation &-e mo$e .
i4es #etter pre$iction of separation an$ 4orte es.Ho"e4er< the user is a$4ise$ that the mo$e resu ts in su#stantia$eterioration in the pre$iction of p ane an$ roun$ free 9ets in sta,nantsurroun$in,s.
- E** - *ura&ami< *ochi$a an$ on$o &-e mo$e for o"aroun$
# u #o$ies as encountere$ for e amp e in "in$-en,ineerin, app ications.
- E - ato- aun$er &-e mo$e for o" aroun$ # u #o$iesas
encountere$ for e amp e in "in$-en,ineerin, app ications.- E*O8 -J0P - &-e mo$e "ith Jap correction for separate$
o"s.
Models
).# Domain Attributes MenuModels
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< Turbulence Models
@ Low01e models - Se4era o"- e Num#er 4ariants of the -Emo$e >
- E*O8 - OW E - am- remhorst o" e(no $s 4ersion of&-ε .- E*O8 - OW E-J0P - am- remhorst o" e(no $s &- ε
"ith Jap correction for separate$ o"s.
- ECHEN- OW E - o" e(no $s 4ariant of Chen- immo$e .
- E*O8 -2 - T"o a(er &- ε mo$e < "hich uses the hi,h- e&-ε mo$e on ( a"a( from the "a in the fu (-tur#u ent
re,ion< an$the near-"a 4iscosit(- a ecte$ a(er is reso 4e$ "ith a
one- e/uation mo$e in4o 4in, a en,th-sca e prescription. This sa4es mesh points an$ impro4es con4er,ence rates.
- O*O8 - OW E - o" e(no $s o mo,oro4-Wi co mo$e
Models
).# Domain Attributes MenuModels
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< Turbulence Models
@ thers - 0 ran,e of mo$e s< from simp e one-e/. mo$e s toe Stress ; EJST S=< inc u$in, a Su#- ri$-Sca e ES mo$e
;S S*O8=>- *I EN - Pran$t mi in,- en,th mo$e . Simp e mo$e for
un#oun$e$ o"s.- *I EN- ICE - *i in,- en,th mo$e for #u## e-co umn
reactors.
- *O8 - Pran$t ener,( mo$e . One-e/uation &- mo$efor"a -$ominate$ o"s.
- W*O8 - Sa man-Spa $in, t"o-e/uation. &-4orticit(mo$e
- EJST S - e(no $s stress mo$e- S S*O8 - Sma,orins&( su#-,ri$ sca e ES mo$e "ith "a
$ampin,- S S*O8-NOW8 - Sma,orins&( su#-,ri$ sca e ES mo$e
"ith no "a $ampin,
- S S*O8-+8W8 - "ith +an 8riest "a $ampin, function
Models
).# Domain Attributes MenuModels
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< 1adiation Models The a4ai a# e ra$iation mo$e s are>@ +MME1* L pro4i$es an economica (-rea isa# eappro imation to the precise mathematica representation ofra$iati4e transfer
@ 0Flu3 ;Composite-F u *o$e => the $iscretisation of an, e issuch that the e ects of ra$iation are accounte$ for #(
reference to the positi4e an$ ne,ati4e ra$iation u es in eachof the coor$inate $irections@ 1adiosit" represents the a4era,e of the incomin, an$
out,oin, ra$iation u es o4er a $irections of the so i$ an, e
Models
).# Domain Attributes MenuModels !
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< ,ombustion Models
Models
).# Domain Attributes MenuModels "
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< ,ombustion Models The fo o"in, com#ustion mo$e s are a4ai a# e>
@ 2 >A*E* - Simp e Chemica (- eactin, S(stem ;SC S=< mi in,contro e$ or &inetica ( contro e$
@ % >A*E* -E ten$e$ SC S
@ ood - Woo$ com#ustion mo$e@ ,oal - Coa com#ustion mo$e
@ il - Oi com#ustion mo$e
@ ,hemkin - Interface to San$ia a#s CHE* IN pro,ram
Models
).# Domain Attributes MenuModels !
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< *olution ,ontrol B E3tra /ariables
Models
).# Domain Attributes MenuModels "
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< *olution ,ontrol B E3tra /ariables This pane ,i4es options to>
@ 0cti4ate stora,e of user-name$ 4aria# es
@ 0cti4ate so ution of user-name$ 4aria# es
@ Set the so ution contro s"itches ;SO TN comman$= for a
store$ an$ so 4e$ 4aria# es. The settin,s are> Store< So 4e ui t-in source< Con4ection<8i usion< Transient< Phase 1 4aria# e< Interphase transfer
Models
).# Domain Attributes Menu(roperties
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(roperties
: This pane contro s the materia s an$ properties
).# Domain Attributes Menu(roperties !
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(roperties
: !se propert" tables
The main $omain materia can #e chosen from the propert(i#raries
).# Domain Attributes Menu(roperties "
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: !se propert" tables Turnin, the se propert( ta# es FF a o"s the in$i4i$uaproperties to #e set $irect (
(roperties
).# Domain Attributes Menu(roperties !
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: Domain Material The in$i4i$ua properties oa$e$ from the i#rar( for the $omain
ui$ can then #e e$ite$ - chan,e$
(roperties
).# Domain Attributes Menu(roperties "
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: Domain Material ases>
(roperties
).# Domain Attributes Menu(roperties #
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: Domain Material i/ui$s>
(roperties
).# Domain Attributes Menu(roperties
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: Domain Material So i$s>
( p
).# Domain Attributes Menu(roperties
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: Domain Material Other *ateria s>
( p
).# Domain Attributes Menu(roperties
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: Edit properties of current material For each propert(< a pu -$o"n ist of a a4ai a# e options is
pro4i$e$
( p
).# Domain Attributes Menu(roperties
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: 1eference pressure and 1eference temperature These 4a ues are a "a(s a$$e$ to the ca cu ate$ pressure an$
temperature #efore use in propert( ca cu ations
( p
).# Domain Attributes Menu(roperties
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: (ropert" storage 0 o"s the e $ 4a ues of the properties to #e p ace$ in the E0 TH
output e PHI< so that the( can #e p otte$ in the 4ie"er
( p
).# Domain Attributes MenuLists the properties used in (- E +,* !
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PIL variable SI units Nature
$HO( 1g3m > first-phase densit&
=$H(=P m 23Newt n pr p rti nate change with pressure
$HO2 1g3m > sec nd-phase densit&
=$H(=P m 23Newt n pr p rti nate change with pressure
EN)% m 23s 1inematic turbulent c ntributi n t effecti!e !isc sit&
EN)L m 23s 1inematic laminar reference/ !isc sit&
P$N=%Lind!ar/ ? 7 dimensi nless the Prandtl r Schmidt number
P$N=%Lind!ar/ @ 7
dimensi nless rwatts3 m degC/ if ind!ar is enthalp& r temperature
P$N=%Lind!ar/ @ 7 m 23s if ind!ar represents an ther scalar
PHIN%ind!ar/ acc rding t ind!ar e0uilibrium interface !alue f r the first phase
PHIN%ind!ar/ acc rding t ind!ar e0uilibrium interface !alue f r the sec nd phase
%9P( degCelsius temperature when first-phase enthalp& is s l!ed f r
%9P2 degCelsius temperature when sec nd-phase enthalp& is s l!ed f r
p p (
).# Domain Attributes MenuLists the properties used in (- E +,* "
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: (ropert" storage 0 o"s the e $ 4a ues of the properties to #e p ace$ in the E0 TH
output e PHI< so that the( can #e p otte$ in the 4ie"er
PIL variable SI units Nature
EL( m first-phase turbulence length
EL2 m sec nd-phase turbulence length
CP( A ule3 1g degC/ c nstant-pressure specific heat f phase (
CP2 A ule3 1g degC/ c nstant-pressure specific heat f phase 2
=*O(=% (3degC pr p rti nate change f first-phase specific ! lume
i"e" recipr cal f densit&/ with temperature
=*O2=% (3degC pr p rti nate change f sec nd-phase specific ! lumei"e" recipr cal f densit&/ with temperature
E9ISS (3m abs rpti!it& B pr p rti n f radiati n which is abs rbed per unit length
SC#%% (3m pr p rti n f radiati n which is scattered per unit length
C
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).# Domain Attributes Menu+nitialisation
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: This panel provides options to8@ 0cti4ate a restart run
).# Domain Attributes Menu+nitialisation
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: This panel provides options to8@ Set a initia 4a ues to $efau t. This is 1.7E-17 for a 4aria# es
e cept>- 1< 2< S > 7.%- EPO < NPO < HPO < +PO > 1.7- P PS > -1.7
).# Domain Attributes Menu+nitialisation
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: This panel provides options to8@ Set in$i4i$ua "ho e-$omain initia 4a ues for a store$ an$
so 4e$ 4aria# es
).# Domain Attributes Menu+nitialisation
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: This panel provides options to8@ Start the In-Form e$itor "ith roup 11 se ecte$ as the current
roup
).# Domain Attributes Menu+nitialisation
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: This panel provides options to8 n ess e p icit ( set in this pane < initia 4a ues for Temperature<
Entha p(< tur#u ence mo$e /uantities an$ so 4e$-for passi4esca ars "i #e ta&en from the in et 4a ues supp ie$ at the rst in et$e ne$
).# Domain Attributes Menu+nitialisation
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: This panel provides options to8@ 0cti4ate a restart run@ Set a initia 4a ues to $efau t. This is 1.7E-17 for a 4aria# es
e cept>- 1< 2< S > 7.%- EPO < NPO < HPO < +PO > 1.7- P PS > -1.7
@ Set in$i4i$ua "ho e-$omain initia 4a ues for a store$ an$so 4e$ 4aria# es
@ Start the In-Form e$itor "ith roup 11 se ecte$ as the currentroup n ess e p icit ( set in this pane < initia 4a ues for Temperature<
Entha p(< tur#u ence mo$e /uantities an$ so 4e$-for passi4esca ars "i #e ta&en from the in et 4a ues supp ie$ at the rst in et$e ne$
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).# Domain Attributes Menu*ources "
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: This pane a o"s the creation of "ho e-$omain sources< "hich arenot attache$ to an o#9ect.0 sources or #oun$ar( con$itions "hich $o not app ( to the "ho e$omain must #e attache$ to an o#9ect< an$ set throu,h the o#9ectattri#ute $ia o, #o
).# Domain Attributes Menu*ources
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: >ravitation forces
).# Domain Attributes Menu*ources
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: ,"clic boundar" conditions #utton ,i4es the options>@ Turn c(c ic #oun$aries ON for a I s a#s@ Turn c(c ic #oun$aries OFF for a I s a#s@ Turn c(c ic #oun$aries on an$ o for in$i4i$ua s a#s
).# Domain Attributes Menu*ources !
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: Moving ?odies :M F 1;
).# Domain Attributes Menu*ources "
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: Moving ?odies :M F 1;@ The *OFO ON OFF #utton acti4ates the *o4in, Frames Of
eference mo$e < "hich a o"s o#9ects to mo4e throu,h the$omain. When turne$ ON< t"o e tra #uttons are $isp a(e$. Onea o"s the user to #ro"se for the *OF e< an$ the other to e$itit usin, the current (-se ecte$ e e$itor. The *OF e contro sthe motion of the o#9ects.
@ *OFO #uttons on ( appear for Transient cases
).# Domain Attributes Menu*ources
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< 1otation speed for rotating coordinate s"stem@ otation causes the rotation of the p ot a#out an ar#itrar( a is
in 38@ The a is ma( #e speci e$ in the same "a( as for +IEW an$ PD
an, es are in $e,rees< an$ ma( #e positi4e or ne,ati4e
).# Domain Attributes Menu*ources
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< (otential =owGPotentia o"G< a so ca e$ Gi$ea - ui$ o"G or Girrotationa
o"G< is a mathematica concept to "hich rea o"sappro imate on ( in specia circumstances< name ( those in"hich>
@ the o" is stea$(D
@ 4iscous e ects are a#sentD an$@ compressi#i it( e ects are sma
).# Domain Attributes Menuumerics
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: The main entries on this pane a o" the tota num#er of iterations
;s"eeps= o4er the "ho e $omain< an$ the , o#a con4er,encecriterion to #e set
).# Domain Attributes Menuumerics !
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< 1ela3ation *ettings
).# Domain Attributes Menuumerics "
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< 1ela3ation *ettings
e a ation is a techni/ue fors o"in, $o"n possi# (e cessi4e rates of chan,e. It$oes not a ect the naso ution.
@ The $efau t re a ationsettin,s turn the Automatic,onvergence ,ontrol ON.
@ MA + , sets the ma imumincrement from iteration toiteration for each 4aria# e.
@ The DTFAL* settin,s for4e ocities are i,nore$ - theso 4er "i set inearre a ation of 7.% for a4e ocities
@ 1eset solution defaults resets a the so 4er contro4aria# es to their $efau t
4a ues< so that the 0utomatic
).# Domain Attributes Menuumerics #
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< 1ela3ation *ettings
If the 0utomaticCon4er,ence Contro isturne$ OFF< the re a ationsettin,s can #e setin$i4i$ua (
@ T(pica 4a ues for DTFAL* ma( #e estimate$ from the,o4ernin, time-sca e of theprocess un$er consi$eration.+er( often< 4a ues #ase$ onresi$ence time "or& "e
@ For the 4e ocit( 4aria# es< itcan #e a$4anta,eous to usethe Se f-0$9ustin, e a ation0 ,oritHm ; *A1A- =. This isacti4ate$ #( settin, S0 0H toa 4a ue V 7. +a ues in theran,e 7.771 - 7.71< t(pica (7.77%< ha4e #een foun$ to
"or& "e
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).# Domain Attributes Menuumerics "
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< +teration ,ontrol The $efau t inear e/uation
so 4er is #ase$ on StoneLsStron, ( Imp icit metho$. Touse the Con9u,ate - esi$ua s- ra$ient so 4er for an(4aria# e< set E D+T for that
4aria# e to >1 D) .Circumstances un$er "hichthis ma( #e a$4anta,eousinc u$e>
@ Pressure correction e/uation; () = in #uo(anc(-$ri4en
o"s< especia ( "ithcomp e ,eometr(D an$
@ Temperature ; TEM) = incomp e con9u,ate heattransfer cases ;e cept "henP0 SO is acti4e=
).# Domain Attributes Menuumerics !
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< Limits on /ariables
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).# Domain Attributes Menuumerics !
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< DiGerencing *chemes
).# Domain Attributes Menuumerics "
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< DiGerencing *chemes ( $efau t< the se ecte$
$i erencin, scheme app iesto a SO +E$ 4aria# es. The$efau t scheme is the HJ I8scheme
).# Domain Attributes Menuumerics #
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< DiGerencing *chemes
Set schemes in$i4i$ua (a o"s the se ection of$i erent schemes for$i erent 4aria# es
).# Domain Attributes Menuumerics
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< M+>AL The *I 0 mu ti-,ri$ con4er,ence acce erator can #e use$ for the
h($ro$(namics< the &-e #ase$ tur#u ence mo$e s< the ener,(e/uation an$ in$i4i$ua sca ars
).# Domain Attributes Menuumerics
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< M+>AL
*I 0 $ia o, ;*I 0 OFF=
).# Domain Attributes Menuumerics
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< M+>AL *I 0 $ia o, ;*I 0 ON= Settin,s #utton ea$s to a $ia o, from "hich a the *I 0 contro s
can #e set
).# Domain Attributes Menu>1 ! D
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< This pane sets specia 4aria# es for use in O 8. The s"itch for P 0NT is a so on this pane
).# Domain Attributes Menuutput !
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).# Domain Attributes Menuutput "
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< Output pane ,i4es options to>@Set the monitoring cell location in terms of cell numbers .
@Set the monitoring cell location in terms of ph"sical space . The nearest ce is chosen as the monitor ce .
@Contro the solver end0of0run #eha4iour.
@Contro the solver convergence monitoring output@Set 9eld print out contro s.
@Se ect the fre/uenc( of 9eld0dumping in terms of s"eeps forstea$(-state cases< or time-steps for transient cases< an$ se ect"hich 4aria# es are "ritten to the sa4e e.
@0cti4ate stora,e of derived 7uantities an$ print-out of "afunction information.
@0cti4ate the ca cu ation an$ printin, of forces on obHects .
@Start the +n0Form editor "ith roup 27< 21< 22< 23 or 2! se ecte$as the current roup
).# Domain Attributes Menuutput
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This has three settin,s>
@Default - o#e( the settin,s in CH0*.INI
@ n - a "a(s stop at the en$ of the run an$ "ait for O <"hate4er is in CH0*.INI
@ G - ne4er stop at the en$ of the run< "hate4er is in CH0*.INI
< (ause at End of 1un
).# Domain Attributes Menuutput
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The so 4er can $isp a( con4er,ence-monitorin, information onthe screen as ,raphs of>
@Spot 4a ues an$ resi$ua s 4s. s"eep ;the $efau t=
@*inimum an$ ma imum e $ 4a ues 4s. s"eep
@*a imum a#so ute correction an$ resi$ua 4s. s"eep
< Monitor >raph *t"le
).# Domain Attributes Menuutput
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The settin,s for O TP Tare>
1. Fie $ print-out
2. Correction-e/uationmonitor print-out
!. Who e- e $ resi$ua print-out
%. Spot-4a ue ta# e an$ orp ot
'. esi$ua ta# e or p ot
< Field (rintout
).# Domain Attributes Menuutput !
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< Dump *ettings
).# Domain Attributes Menuutput "
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< Dump *ettings This contro s the s"eep ;forstea$(-state= or time-step ;fortransient= fre/uenc( "ith "hich
o" e $s are "ritten to $is& e. The settin, for O TP T for each4aria# e $etermines "hether that4aria# e is "ritten to the sa4e$ eor not. This can potentia ( sa4e a
ot of $is& space #( on ( "ritin,the 4aria# es of rea interest< #ut"ou $ a so pre4ent such aLthinne$-outL e from #ein, use$as an Earth restart e.
In transient cases< interme$iateo" e $s can #e $umpe$ at
re,u ar time-step inter4a s
).# Domain Attributes Menuutput !
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< Derived /ariables
).# Domain Attributes Menuutput "
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< Derived /ariables P acin, the S&in friction coe cient< Stanton Num#er< Shearstress ;actua ( friction 4e ocit( s/uare$< e/ui4a ent to shear
stress $i4i$e$ #( $ensit(=< Jp us ;non-$imensiona $istance tothe "a = an$ heat transfer coe cient ;in W m 2 = into 3-8stora,e a o"s them to #e p otte$ in the +ie"er or PHOTON< as"e as appearin, in the ES T e.
Note that the heat-transfer coe cients are on ( ca cu ate$ fortur#u ent o". To ma&e them appear for aminar cases< thetur#u ent 4iscosit( shou $ #e set to a 4er( sma 4a ue - sa(1.7E-17. The Stanton Num#er must #e store$ for the heat-transfer coe cients to #e ca cu ate$.
The friction force components SH < SH J an$ SH are use$in the force-inte,ration routines to a$$ the friction force to thepressure force actin, on each o#9ect. If the( are not store$< theinte,rate$ force "i on ( contain the pressure component.
The Tota or Sta,nation Pressure ;PTOT= is on ( ca cu ate$ if the*ach Num#er is store$. If the eference Pressure is set to ?ero<
the tota pressure ma( o #e o" ?ero< ea$in to an error-stop
).# Domain Attributes Menuutput
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< Forces on bHects When this is LOnL< the Earth so 4er "i inte,rate the pressure
forces o4er a o#9ects an$ print the force information to theES T e. If the friction force components ;SH < SH J an$
SH = ha4e #een p ace$ in 38 store< the force inte,ration "iinc u$e them
The moments a#out the < J an$ a es are ca cu ate$< an$ thepoint of action of the force is $e$uce$
!.# O- ect ana5ement Panel !
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@In the + -E$itor< a ,eometrica features are represente$ #(o#9ects. The( ma( represent for e amp e> # oc&a,es< in ets< out ets or heatsources. Comp e o#9ects can often #e represente$ #( suita# ecom#inations of simp er o#9ects.
@O#9ects can #e 4o umes or areas< #ut ne4er ines. E4en in a t"o-$imensiona case< PHOENICS re/uires a $epth in the thir$$imension< or in a one-$imensiona case< "i$th an$ $epth. This is#ecause of the nite-4o ume numerica so ution metho$
@O#9ects are manipu ate$ 4ia the O#9ect *ana,ement Pane ;O*P=<
"hich is reache$ #(>- c ic&in, on the #utton on the han$ setD
- c ic&in, on the icon on the too #arD or<
- c ic&in, Settin,s - O#9ect attri#utes from the Top *enu #ar
!.# O- ect ana5ement Panel "
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< bHect Management Dialog@ The O*P contains a ist of the o#9ect names a on, "ith associate$
&e( $ata for each o#9ect .( $efau t the o#9ects are sorte$ #( their reference num#er<
co umn t"o. The( ma( a so #e sorte$ #( name< t(pe< ,eometr( orco our #( c ic&in, on the appropriate co umn hea$er. The co ournum#er iste$ is the pa ette entr( for the rst facet in the,eometr( e
!.# O- ect ana5ement Panel #
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< bHect Management Dialog
@ The O*P has four pu -$o"n menus "hich ena# e o#9ects to #ecreate$< up$ate$ or $e ete$. The up$atin, an$ $e etin, actionsare performe$ on a the se ecte$ o#9ects. Each co umn a so hasits o"n conte t menu< $isp a(e$ #( ri,ht-c ic&in, in the co umn.
@ bHect Menu < Action Menu < /iew Menu < >roup Menu <
,onte3t Menu
!.# O- ect ana5ement PanelbHect Menu
!
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< bHect Management 0 bHect Menu
@ ew bHect
!.# O- ect ana5ement PanelbHect Menu
"
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Creates a ne" o#9ect at the ori,in an$ opens the O#9ect 8ia o, forit
@+mport bHectCreates a se/uence of o#9ects from the contents of a PO e. The
rst o#9ect is a "a(s an 0SSE* J o#9ect< "hich acts as aLcontainerL for the component o#9ects
@,op" bHect ;s= This ma&es a cop( of the se ecte$ o#9ect;s=< inc u$in, a attri#utes.
O#9ects an$ acti4e ,roups can a so #e $up icate$ #( c ic&in, on the8up icate O#9ect or roup #utton of the han$-set
@Arra" bHect ;s=0rra(in, is a 4ariation on $up ication. It a o"s the creation of anentire arra( of o#9ects or ,roups< a copie$ from the ori,ina
@*elect All Se ects a o#9ects ;e cept the $omain= in the o#9ect mana,ementpane .
@1efreshIt is possi# e for the o#9ect mana,ement to #ecome out of s(nc"ith the current status of the mo$e < in these cases use refresh toup$ate its contents
@
!.# O- ect ana5ement PanelAction Menu
!
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< bHect Management 0 Action Menu
@ bH t di l
!.# O- ect ana5ement PanelAction Menu
"
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@ pen obHect dialog This opens the o#9ect $ia o, #o for the current o#9ect. The current
o#9ect is the one hi,h i,hte$ in the ist. If more than one o#9ect has#een se ecte$< the $ia o, #o for the ast o#9ect to #e se ecte$ isopene$. When the o#9ect $ia o, is c ose$< the chan,es ma$e can#e optiona ( propa,ate$ throu,h a the other se ecte$ o#9ects"hich are of the same t(pe
@-ide obHect ;s= This hi$es ;ma&es in4isi# e= a the current ( se ecte$ o#9ects
@1eveal obHect ;s= This re4ea s ;ma&es 4isi# e= a the current ( se ecte$ o#9ects
@Delete obHect ;s= This $e etes a the current ( se ecte$ o#9ects. The user "i #eprompte$ for con rmation #efore o#9ects are $e ete$
@Modif" colourOpens the o#9ect $ia o, for the current o#9ect on the options pa,eDc ic& on the o#9ect co our #utton to mo$if( the co our. The o#9ecttransparenc( ma( a so #e set from here. When the o#9ect $ia o, isc ose$ the co our chan,es "i #e app ie$ to a se ecte$ o#9ects
@ bHects aGects gridO#9ects interact "ith the computationa mesh. Turnin, the mesh
to e on the han$-set ON causes the current ri$ to #e $isp a(e$
!.# O- ect ana5ement PanelAction Menu
#
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@ bHect constrained b" domain( $efau t< o#9ects cannot pass throu,h the faces of the $omain.
Simi ar (< the $omain cannot #e ma$e sma er than the ar,esto#9ect. ut sometimes it can #e con4enient to a o" o#9ects topartia ( ie outsi$e the $omain - for e amp e to mo$e one ha f of a#o$(
@*urface contours ;+ie"er on (=Chec& menu item to,, es "hether surface contours are $isp a(e$on the current items
@Dump surface values ;+ie"er on ( if Surface contour tic&e$=@Dump obHect pro9le ;+ie"er on ( if Surface contour tic&e$=@*how results ;+ie"er on (=
8isp a(s sources an$ sin&s for the se ecte$ o#9ect in a pop-up"in$o". The 4a ues are rea$ from the LSources an$ sin&sL section of
the ES T e. Force an$ moment $ata for # oc&a,es is a so$isp a(e$ if present.
!.# O- ect ana5ement Panel/iew Menu
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< bHect Management 0 /iew Menu@ The rst se4en chec& menu
entries in$icate "hether thecorrespon$in, co umn is 4isi# ein the ist#o . The na chec&menu item L0ssem# ( o#9ectsLin$icates "hether the chi $assem# ( o#9ects are 4isi# e inthe ist of o#9ects
!.# O- ect ana5ement Panel>roup Menu
!
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< bHect Management 0 >roup Menu
!.# O- ect ana5ement Panel>roup Menu
"
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< bHect Management 0 >roup Menu@ *aveWhen more than one o#9ect is se ecte$< a temporar( ,roup is
create$. This ,roup ma( #e sa4e$ to #e reca e$ ater #(usin, this option. 0n( sa4e$ ,roup "i su#se/uent ( #e iste$in the ist of o#9ects in the o#9ect mana,ement pane . 8etai sof an( sa4e$ ,roups "i #e "ritten to the K1
@ Delete If the current o#9ect is a sa4e$ ,roup then this option#ecomes acti4e an$ ma( #e use$ to $e ete the ,roup
@ Modif" This option ma( #e use$ to mo$if( the mem#ership of asa4e$ ,roup
!.# O- ect ana5ement Panel,onte3t Menu
!
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< bHect Management 0 ,onte3t Menu
!.# O- ect ana5ement Panel,onte3t Menu
"
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< bHect Management 0 ,onte3t Menu@ The conte t menu is an e tension to the 0ction menu. The itemsin the menu $epen$ on the co umn. It ena# es the rapi$ se ection
of o#9ects of a sin, e t(pe or ,eometr(< an$ a so pro4i$es ashortcut access to the ,eometr( ,eneration pro,ramShapema&er.
@ 0 simi ar conte t menu is accesse$ #( ri,ht-c ic&in, on an o#9ectin the ,raphics "in$o".
@ The conte t menu for the L eferenceL co umn is $i erent from theothers - it a o"s the se/uence num#er of the se ecte$ o#9ect;s=to #e chan,e$
Object Type Brief Description
!. O- ect &1pes and Attri-utes
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Object Type Brief DescriptionDl c1age >=, s lid r fluid" Can appl& heat and m mentum s urces"
Inlet 2=, fixed mass s urce" #ngled-in >=, fixed mass s urce"6ind Pr file 2=, fixed mass s urce f ll wing atm spheric b undar& la&er"Outlet 2=, fixed pressure"
#ngled- ut >=, fixed pressure"Plate 2=, 5er thic1ness bstacle t fl w" 9a& be p r us"
%hin Plate 2=, n minal thic1ness f r heat transfer"=, f r setting user-defined s urces P#%CH3CO*#L/"Cellt&pe 2= r >=, f r setting user-defined s urces cann t affect grid/"Null 2= r >=" )sed t cut the grid f r mesh c ntr l"PCD >=, s lid r fluid with n n-is tr pic thermal c nducti!it&Pressure $elief single cell fixed pressure p int"=rag lift >=, regi n !er which m mentum imbalance f rce/ will be calculated"
#ssembl& 2= r >= c ntainer bAect f r multi-c mp nent bAect%ransfer 2=, transfers s urces between calculati ns
!. &he 4R Editor Control Panel
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6 Movement ,ontrols
!. &he 4R Editor Control Panel
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6 Domain and bHect ,ontrols
". 4R 4iewer !
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@+ectors - c ic& on the L+ector to,, eL .
+ectors are co ore$ #( the current p ottin, 4aria# e< #uttheir en,th is a "a(s re ate$ to the a#so ute 4e ocit(.
@Contours - c ic& on the LContour to,, eL
@Stream ines - c ic& on the LStream ine mana,ementL#utton
@Iso-surfaces - c ic& on the LIso-Surface to,, eL
@ To se ect Pressure - c ic& on the LSe ect Pressure #uttonL@ To se ect +e ocit( - c ic& on the LSe ect +e ocit( #uttonL
@ To se ect Temperature - c ic& on the LSe ect Temperature#uttonL
@To se ect an( other 4aria# e c ic& on the LSe ect a
6 To view8
6 To select the plotting variable8
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Chapter #Chapter #
PHOENICS Application E9ample
4*imulation of ,ontaminant Flow5
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Pre'Processor 4R'Editor !
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Pre'Processor 4R'Editor "
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ain Sol$er Earth
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Post'Processor 4R'4iewer
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&HE EN*&HE EN*