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TUTORIAL 1XU Xiaonan

09/02/2015

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Office

TAs: Xu, Xiaonan (xxuae@us!"#$

Lu, %ian&ie (&'ua&@connec!us!"#$

on), Ru*uan

(+son)a@connec!us!"#$ Office: R-121. (Lif 21, nea+ "e exi$

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A'icaions of ea T+ansfe+

Ai+ coniionin)

Ref+i)e+aion

ae+ "a+3esin)

4oe+ )ene+aion

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-oes of "ea +ansfe+

6onucion

Raiaion

6on3ecion

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6onucion

6onucion7ou+ie+s La

o'i 8ae+ (is "e+8a' conuci3i* #$

Te8e+au+e iffe+ence a'on) one i+ecion

ea f'ux

T"+ee necessa+* co8onens fo+ a conucion +o'e8

To of "e8 i'' e #non i+ec'* o+ ini+ec'* o ca'cu'ae

"e "i+

T1

T2

T1;T2

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6on3ecion

6on3ecion

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Raiaion

Raiaionefan?o'8ann La

B8issi3e oe+:

I++aiaion:

Aso+e i++aiaion:

Raiaion exc"an)e:su++ounin)

su+face

i++aiaion

e8issi3e oe+

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Bne+)* conse+3aion

T"e+8o*na8ic:

7i+s 'a: ea, o+# an Bne+)*Cesc+iion: An* "e+8o*na8ic s*se8 in an eui'i+iu8 sae ossesses

a sae 3a+ia'e ca''e "e ine+na' ene+)* !

c"an)e in ine+na' ene+)*

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Bne+)* conse+3aion fo+ a con+o' 3o'u8e

O3e+ a i8e ine+3a': Bs B)

Bin Bou

Closed systems

Steady-flow

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u+face Bne+)* a'ance

6onse+3aion Bne+)*(Insan in Ti8e$:

i" no 8ass an 3o'u8e, ene+)* so+a)e an

)ene+aion (3o'u8e+ic$ a+e no e+inen o "e ene+)*

a'ance, e3en if "e* occu+ in "e 8eiu8 oune *"e su+face

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Q1,A sua+e si'icon c"i (#D150/8E$ is of i" D588 on a siean of "ic#ness D188! T"e c"i is 8oune in a sus+ae suc" "a

is sie an ac# su+faces a+e insu'ae, "i'e "e f+on su+face is

exose o a coo'an! If F a+e ein) issiae in ci+cuis 8oune

o "e ac# su+face of "e c"i, "a is "e sea*?sae e8e+au+e

iffe+ence eeen ac# an f+on su+facesG

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Q2,A s"e+ica' ine+'anea+* +oe of 0!5?8 ia8ee+ conainse'ec+onics "a issiae 150! If "e +oe su+face "as an e8issi3i*

of 0!H an "e +oe oes no +ecei3e +aiaion f+o8 o"e+ su+faces,as, fo+ exa8'e, f+o8 "e sun, "a is is su+face e8e+au+eG

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Q3,Raioaci3e ases a+e ac#e in a 'on), "in?a''e c*'in+ica'conaine+! T"e ases )ene+ae "e+8a' ene+)* nonunifo+8'*

acco+in) o "e +e'aion , "e+e is "e 'oca' +ae of ene+)* )ene+aion

e+ uni 3o'u8e, is a consan, an is "e +aius of "e conaine+!

ea*?sae coniions a+e 8ainaine * su8e+)in) "e conaine+

in a 'iui "a is a an +o3ies a unifo+8 con3ecion coefficien h!

Oain an ex+ession fo+ "e oa' +ae a "ic" ene+)* is )ene+ae in

a uni 'en)" of "e conaine+! Use "is +esu' o oain an ex+ession

fo+ "e e8e+au+e Ts of "e conaine+ a''!

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Q4. Matlab to solve the F" o+e+ euaion

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Use -a'a o so'3e "e F" o+e+ euaion

8 45.3865 10 102 31813 0

s sT T

+ =