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8/12/2019 CalculiX Pipe Mesh Tutorial
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tutorial
How Toexde 2D mesh n 3D n Ccx ppe mesh exmpe
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Tutorial CalculiX meshing for OpenFOAM: pipe mesh
Previous steps:
The 2D mesh was create in !lener with the use of the f"
e#portscript$ The generation ofthe 2D mesh itself is the su"%ect of
an other Tutorial ocument$
&tarting up an opening the 2D mesh:
&tart up CalculiX:
cgx -b cylinder3.fbd
The ne#t step is to swep the 2D mesh in 'D among a strait line$
(et)s call the other en of thepipe *top+$ All the entities ,points-
lines- surfaces importe. are store in the *all+ selection atthe
"eginning$ /e will use a translation vector of 01-1-34 5
irection:
swep all top tra 0 0 18
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Tutorial CalculiX meshing for OpenFOAM: pipe mesh
Chec6 what is the efault ivision for the lines$ /e woul li6e to
use he#aheron cells- all the
2
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Tutorial CalculiX meshing for OpenFOAM: pipe mesh
lines will "e ivie ue to its ivision efinition$ The ivision
efinition can "e visulai5e fore#ample for all the lines in the
moel:
plot ld all
7ote that the new lines the ones parallel to the 5 a#is 8 have 9
as ivision Change theivision of these lines&witch the *;#+
view:
'
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Tutorial CalculiX meshing for OpenFOAM: pipe mesh
7ow change the ivision:
qdiv
&election moe *all+:
a
Define the opposite corners of the selection rectangle:
r
r
9
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8/12/2019 CalculiX Pipe Mesh Tutorial
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Tutorial CalculiX meshing for OpenFOAM: pipe mesh
T
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Tutorial CalculiX meshing for OpenFOAM: pipe mesh
numFaces:456192 numElems:76032 size:32845824
ready
Bisuali5e the newl< create elements:
plot e all
Toggle on *>lement >ges+:
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Tutorial CalculiX meshing for OpenFOAM: pipe mesh
&witch visuali5ation for element face visuali5ation for
smaller memor< usage:
plot f all
7ow create selections for inlet- outlet an wall$ To o the
selection the first letter of theelement name shoul "e t
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Tutorial CalculiX meshing for OpenFOAM: pipe mesh
Chec6 what was selecte ,with green color.:
plot f all
plus f in g
3
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Tutorial CalculiX meshing for OpenFOAM: pipe mesh
Eemove non necessar< faces from selection:
qrem in
a
r
r
f
q
Create the outlet ,*out+. an wall ,*wall+. selections on the
similar wa
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Tutorial CalculiX meshing for OpenFOAM: pipe mesh
Chec6 what selections are e#isting with what content:
prnt se
The repl< is the following:
1 all stat:o n:80100 e:76032 f:7872 p:1602 l:3937 s:3104 b:768
L:0 S:0
se:0
2 top stat:c n:801 e:0 f:768 p:801 l:1568 s:768 b:0 L:0 S:0
se:0
3 in stat:c n:0 e:0 f:768 p:0 l:0 s:0 b:0 L:0 S:0 se:0
4 -NJBY stat:c n:0 e:0 f:0 p:0 l:0 s:0 b:0 L:0 S:0 se:0
5 out stat:c n:0 e:0 f:768 p:0 l:0 s:0 b:0 L:0 S:0 se:0
6 wall stat:c n:0 e:0 f:6336 p:0 l:0 s:0 b:0 L:0 S:0 se:0
>#port mesh in OpenFOAM format with the e#isting face
selections ,*in+ 8 patch t
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Tutorial CalculiX meshing for OpenFOAM: pipe mesh
wrote foam mesh
ready
The mesh is rea< to "e use in OpenFOAM now Gou can Huit
CalculiX:
quit
