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Tutorials vU_-Nk*N]z/fN*N!kż~P[vU_0k*N]z"vvU_N gNRP[vU_import, parts, domains, mesh, ŚT
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" parts/: CAD !jW
" domains/: ^Ó~"gmQbSOQ
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" mesh/: ąŹLuagNeN (family_boco, boco)Ó~"gQeN(tetin1).
" transfer/: BlćhVŹeQeN(star.elem), (uN Mom3d."vRgpenc
mesh vU_-N Tetin eNćNh\RRQReplay eN/fmQbSOQ źhŚT.vd\O
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,{ŚNąz ICEM CFD Mesh Editor Lub
The Mesh Editor, Rś^O9eQbŻsXS+T N*NzćS
" The ICEM CFD ;NzćS
" >f:yzćS
" The ICEM CFD mo`zćS
;NzćS
;NzćS-Nd
ąNVb_>f:y:SWYŹ g6*Nradio c"File, Geometry, Meshing, Edit Mesh and Output.
The File Menu
The File menu S+T
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" Open, Save, Save as, Close, Quit, Project dir, Tetin file,
Domain file, B.C file, Import geo, Export geo, Options, Utilities,
Scripting, Annotations, Import mesh, DDN part.
The Geometry Menu
The Geometry menu !jWOeŚTꏹŹLuagN"vnŚ(uICEM CFD DDN0[S+T
" DDN tools, Bound conds, Repair, Utilities, Global setup.
!jWęŹ!j_1uNłci_rradiobuttonsżc6R
" Surface, Curve, Point, Material, Density, Loop.
[NSR+RwQ g!kż~܃US
" Create, Delete, Modify, Mesh params, Change family,
Copy/move.
The Meshing Menu
The meshing menu S+TICEM CFDTyQ!jWW"vlicenseNMbSNO(uŁŹ*N!j
WW0vMRICEMCFDcONR!jWW
" Hexa, Tetra, Global, Prism, Quad, AutoHexa, Mulcad/Padamm,
P-Cube
c
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NT"v!jWW0
The Edit Mesh Menu
The Edit Mesh menuS+T_"vQ" Copy/move, Smooth, Refine, Coarsen, Merge, Extrude,
Diagnostics, Uncouple, Bandwidth, Change type, Change
family, Utilities, Edit nodes, Edit elements, Edit edges, Edit
Blocks, Edit subfaces, Repair
The Output Menu
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The Output menu"ł[
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" Select solver, Bound conds, Solver params, Solver input,
Run solver, Visual3, Mom3d, RAMM-ICE
Note: The ICEM CFD TYt!jWW Visual3, Q gćSY"vlicense
The Utilities Cluster
ŁŹNźRżżMON;NzćS"vóS
N҉
" Help: connects the user to the ICEM CFD on-line help
" Orient: żc6R>f:yPWh
" View: [6R>f:y^\'`
" Undo: d\OS"`
" Redo: ńdS"`
" Print: SbpS
" Shell: Ś(uN*NX-Term}TNzćS
>f:yzćS
The display window, YNO\U^óSąŹ, AQżc6R cgqfamily, geometric entity, element
type and user-defined subsetseg>f:y.
Important: Since some functions are performed only on the entities
shown, the Display window is a very important feature to use when
isolating the particular entities to be modified.
Families
Color-coded and customizable, display by family, as defined in the
mesher interface, is available in this window.
Geometry
When this button is toggled on, the user has control over the
display of geometric entities. The Opts button beside for each
entity type allows control over the display characteristics.
Note: Based on the domain file chosen, this toggle button will
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either be labeled unstructured or structured, or be absent
altogether if no domain file is specified.
" Structured or Unstructured: Aside from display of the mesh
based on element type, for even greater power, ICEM CFD
allows the user to create custom subsets; the careful display of
which allows a great deal of control in the mesh operations.
" Display Subset: This toggle button allows you to define subset
of your model based on a set of numerous attributes, including
element type, screen selection, coordinate position, etc.
,{ Nąz ICEM CFD Tetra VbSOQęRł[CAD!jWbSTL!jWubVbSOQŁŹ/fTetraub"vńhbŚTVbSOmTQS+T55NVb
SOQN~
Tetraę(u8Sh{legł[SOyŹLVbSOkXEQv^ubhbQwQ g:_'Y"vQł[N
YBg!jWICEM CFD TetrawQ gYNOąp:
" śWN8Sh{l"vQ" _!jWset-up
" Q" ąehb"v N҉b_RR
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" SNvĄcNCAD!jWŚTSTLpencŹLQ" ł[CAD surfaces and/or STL Representation[INQ" żc6RSOyQŁ"vQ" VbSO"vąpŚTfż~NNHQ"vĉ[9SMę
" ę(uNatural size USr"vłQ[ąQUOyr_
N"vVbSOQ" SOyQ" VbSOQ" USr:SW"v|S
" Enforcement of mesh periodicity, both rotational and translational
" hbQ" @\ŁĆ~SŚT|S
" :NYyPgecON*N~N"vQ" _{l: 1500 cells/second
ICEM CFD Tetra "vŹeQ
ICEM CFD Tetra"vŹeQąel g
" Sets of B-Spline curves and trimmed B-Spline surfaces with
prescribed points
" Triangular surface meshes as geometry definition
S_B-splinefż~ŚTfbŹeQTę(uż~kŚT N҉b_ł[fbŚTfż~Ź
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"ŚHQĉ["vąpOO_[ńśQfż~
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g]wQegęR"v(W\"vyr_
NSąpŚTfż~0
N҉b_hbQsQ.ąpŚTfż~żYęR"vĆ+R0
ub"vQW"vb_śr0ŁŹł[NN+R"vQ!jW/f_ g(uY"v0
ICEM CFD Tetra -N"vzfżąQUO
ICEM CFD"vCADĄcćS QŻOYu gCADąQUO!jW"vSpeScŹ (WCAD
-N -N[eQ"v!jW&^ gD
R"vOo`[NN;NąQUO!jWNwćX[PąQUO!jW"vSpe9eST(u7bęeub
Q Save1\SNzsSŹL^Ó~"gVbSOQŃyx-NżVhttp://www.SciEi.com ŃyxeŃyxeązŃyxDćŻŃyxVGrŃyxN}ŹŃyxd"}ŃyxQ@WŃyxZSó[Ńyx[W
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7. TRd
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8. ŹNekĆ~RUSCQNnłćĉ["vQ9. Źąp"vTv^0yR0ńNbcŚT Rd
ŹLQFamily n, Material Points, "ŚHQĉ[ Points
(WICEMCFD-NSNł[ąQUO!jW-N"vTyąQUOCQ }ŹLR~ ŁŹ7hAQ(u7bł[
N"vfamilies
b_b
N"vfamilies0
ŹL
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ąNł[
NfamiliesnąŹLuagN(u7bŹSNł[k*Nfamily[INżc6RQmaximum length, initial height, and height ratio0dkYŹSNł[USr"vfż~ŚThb[INQHQĉ["vQY
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ŚTfż~0
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ekńTetraBl(Wk*NŹLRg"v
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eg[INAmSO:SWł[NÓ~"g gP
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ICEM CFD Tetra ęyr'`
Natural Size
Yśgł[N*Nfamily[IN"vg'YVbSO:\ł[kg*NbXTąQUOCQ }'Y(u7b_{ŚO(u
natural sizeP
6R0The user can specify a natural size
that is proportional to the reference tetra size; it should be assigned
a value that is slightly smaller than the smallest gap in the model,
so that the mesher will further subdivide the tetrahedra to match
this geometric feature.
The natural size limit \/fte*NQmax size on a geometry entity will Tetra continue to subdivide until meeting
the maximum size request. The effect of the natural size limit is a
geometry-based adaptation of the mesh.
Tetrahedral Mesh Smoother
the tetrahedral smootherĄ{k*NUSCQ"v(ćę06qT9hnc(u7bc["v(ćęBlŹLs^Ńn0
SmootherO9e@b g
N&{ThĆQ"vUSCQ ąpyR0Tv^ąŹńNbcbUSCQ
Rd
0Ydkę
Yv0RnłćBlbŹ0RN["vŹćN!kpe0
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geP(u7b
N?ał[g*NfamilyŹLQźRżegc[g*NfamilyŻOc
NS0dkYćSYN*Nłv
ńhbUSCQ"vs^Ńn0
Tetrahedral Mesh Coarsener
CoarseningŚTsmoother"vŹzłvg*Nfamily"v
coarsend\O0
Yśgcoarsend\O-Nsize_check yŚSb__0R"vQ:\ł[hĆQ0NTetraS+TąNŚ[hQ"vbq_projectionŚTsmoothing]wQtoolsNĘSUSCQR
ś^0 Rd
0R0ńNbcŚTuniform enforcement of orientation.
Triangular
In the interest of minimizing grid points, the coarsener reduces the
Surface Mesh
number of triangles in a mesh by merging triangles. This operation
Smoother
is based on the maximum deviation of the resultant triangle center
from the surface, the aspect ratio of the merged triangle, and the
maximum size of the merged triangle.
Triangular
ICEM CFD Tetra cOńNłN_QSurface Editing
R0Tv^b Rd
0 N҉b_USCQSNUSr"vRrRŚThN
NT"v
Tyv^ŹL(ć
Tools
ęĄhgNŹLċN0
hbQ m g~bęąS"v N҉b_ŚTnon-
manifoldvŚąpNĘSdetection of single/multiple edge and duplicate elements.
Prism Layer Offset
ł[N/ec^Ó~"gVbSOŚTńhbmTQICEM CFD Tetra "vN*Nr
yrźRżPrisms żY(WXbD
ŃŹżNuOPy"vńhbB\QMesh Periodicity
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,{ Nąz VbSOQŁŹ*N:y-NbN\ł[YV"v NMOĄ{SVTkŹLVbSOQfigure 3.1.1
,g:yN~"vd\O g
Geometry
" nQModel ŚT Mesh params > Families.
Meshing menu
" ęRQ Batch from CAD
Edit mesh menu
" ĄhgQSb_]z
Sb_File > Open bSelect project b3DpipeJunctprojectćQ btetin10YśgśQsN*Nc:yzćS
Bl R}ŹN*NdomainR bCancel eg_YN*Ne"v!jW0
ubVbSOQ[INfamily
1 YśgfamiliesŹ*g[INŁHN
HQł[ąQUO!jW"v
NT:SWR{|NRś^family0gRte*NąQUO!jWn:N
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N*Nfamily
Ty:NGEOM0bN\ cgqfigure 3.1.1@b:yegO9efamilyn0hbfamily gINL, OUT, CYL1,
CYL2, and SYM0
2 b Geometry > Surface> Change family.egO9efamilyn
3 (u źhć]. bg*Nhb(u źh-N.nxń b6qTOśQsN*NfamilynzćS0b:N@b b
"vb bN*N]~X[(W"vfamilyb(WNew family-NŹeQN*Ne"v
Tyeg:NŁŹ*NN bRś^N*N
family
4 Nće@b g"vsurfacenęe}T
Tę(ułv5 (WGeometry > Curve> Change familyąQUO!jW-N@b g"vfż~\n:NCUR0
(u7bSN cOO źhć].bRŹLbox-select0
6 @b g"vąp>e(WPTS family-N0Łla\IQh>e(W;NzćS-N c"v".RSN b
@b gąpCQ }0
[INMaterialąp
1 !jW"vmaterial\n:N LIVE family0[YNWńg"vQŁ0
2 b Geometry > Material > Create > Screen midpoint.
3 (W Select family zćS-N, ŹeQ LIVE \O:N New family
Ty c Accept ĄcS
4 (u źhć].(WWńg
N b$N*Nłvł["vvŚąp6qT c źh-N.nxń0LIVE "^(W
ąQUO!jW"vQŁ0elŹ!jWNnxń[nxś[(WSOyQŁ0
5 Rd
zz"vfamilies ąpQ
(WDisplay܃US-N bFamilies > Edit Delete unused0
ŁŹ7hRh-N"vąe(ufamilyOęRnd
0 cAcceptsQŁŹ*NzćS0
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nQ1 nxńSurfaces ŚT Curves ż]~toggled on, (WdisplayzćS"vR+R cSurfaces ŚT Curves"vOpts > Tetra
sizesVbSOb_śr"vVh1\O>f:y(WąQUO!jW
N0
2 ŁŹe(u7bSN(uMesh params > Model egO9ete*N!jW"vQReference size/fN*NXNpevQN@b g"vfamily0fbŚTfż~"vQ
NT Reference size "vHeśg
3
Łla9eSReference size v^ c Apply O9eSąQUO!jW
N"vVbSOVh"v:\ł[0
4 9eSg*Nc[family"vQSurface>Mesh params > Families0(u7b1\SNNSelect
familyzćS-N bfamilyYV 0,g:y-N bCYL2 6qT c
Accept0CYL2 ł["^"vhb1\ON RN>f:y0
5 (WSurface family mesh params zćS-N(YV)ł[Size c
[:N0.5vQNSpe:N0ąV:NTetra ubQpeęS gHexa(u0 b Show size params using refsize O
O_ cNApplyTSpeŚteS0 bDismiss sQzćS0
6 S_ł[Q Save egX[P0
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Running the Tetra Mesh
1. b Meshing > Tetra > from CAD/Surface Mesh
egubVbSOQśQs(YóSV);
2. cgqV-NnT Message
cMeshŹLQWindow\OĄbJTQŃŁlŁŹ*NekńŚTPDFech-N@bŹ
NłvTźSe-N"v܃
USŚTTetra parameterszćSN4.2Hr
N*YN7h0
źSeŚTźSV
YN
Choose Meshing > Tetra > Batch from CAD to generate the
tetrahedral mesh. The Tetra > Interactive from CAD mode
indicates that Tetra will not automatically save the
volume mesh (Write volume) or surface mesh (Write
surface). The Tetra parameters window will appear (refer
to Figure 3.1.4):
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Saving the Mesh
(u File > Save >Domain file X[v
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,{"Nąz Sphere Cube
,g:yKNT\OŚccę(u Smoother egcؚQN*NJStSOQ+TN*NząeSOzzT0V-NNhfhb"v family
Ty0
1Sb_]z
(W Select project zćS bSphereCube]zTćQSb_tetin1eN0
3. ubVbSOQFamilyn
1. NMRb"v:yłvTgR@b g"vhb^\NN*Nfamily GEOM0(u7b cgq
NVł[hbęeRś^family
(SPHERE, CUBE, SYM) 0
2. (WGeometry > Surface> Change family܃US-NO9efamilyn0
3. (u źhć]. b"vhb (WSelect family zćSśQsT
6qT-N.nxń b0 b b]~X[(W"vfamily
bRś^e"vfamily0
4. ,g:y-Nł[N@b g"vąpŚTfż~:NN*Nfamily, GEOM0
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[INMaterialąp
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N*N:yN7hmaterialąpn:NUSr"vfamilyLIVE0ę(uCreate > Screen midpointźRżnmaterialąp0
(u źhć].(WJSt
N b$N*Nąp c-N.nxńLIVE1\OśQs(W!jW
N0
Reassigning Mesh Parameters
1. (u7b_{Ś(WQMesh Params > Model egŹeQModel Mesh Params zćS0
2. Łla: :NąNąeżOś^Sb_Reference sizeeąŹ"vdisplay yŚeg>f
:yh:N ref "vVbSOVh0NDisplay܃US-NSb_Surfaces >
Opts > Tetra sizes ŚT Curves > Opts > Tetra sizesN>f:yćNhQ
3. V0R Model mesh params zćSŹeQYVSpe
4. (WMesh params > Families-NSNł[
N"vfamilyn
NT"vQSpe0ł[N SYM cgqNVn0
5X[v
6S,{Vąz b Meshing > Tetra > from
CAD/Surface Mesh egubVbSOQparameters zćSZPnT cMeshŹLQMessage Window\OĄbJTQŃŁlźSPDFech@bŹNdk
NT0ICEMCFD4.2Hr"v
Tetra parameters zćS-NąelsQSmoother0ąVdk(WŁŹ
ęnSmoother
NZP_}Y"vs^Ńn0NżOTbŹLs^Ńn
d\O"vł[kff>f0
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