FfC v5.0 03 Defining Geometry

8/17/2019 FfC v5.0 03 Defining Geometry

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© 2009 ANSYS, Inc. All rights reserved.e!r"ary 1#, 2009Inventory $002#02

ntroduction to FLUENT

for CAT A V5

Defining the Geometry


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1-2 ANSYS, Inc. Proprietary

© 2009 ANSYS, Inc. All rights reserved.e!r"ary 1#, 2009

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Training Manual

FLUENT for CATIA V5 Version 5.0

Introductory Training, Decemer !00"

F#uent for Catia $u%%ort center

&tt%'(())).f#uentusers.com(ffc

Agenda

• FLUENT for CATIA Workbench

•

FLUENT for CATIA Specification Tree• Defining the Geometry

• Etracting the F!o" #o!$me

• Working "ith Symmetric Geometry

• Appendi


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FLUENT for CATIA Workbench

• FLUENT for CATIA Workbench can be!a$nched from the Ana!y%i% andSim$!ation gro$p in the STA&T men$'

• FLUENT for CATIA Workbenche%tab!i%he% a ne" gro$p in the%pecification tree ca!!ed(art)*F!$ent(rod$ct'

– The gro$p copie% of the origina! CATIA

body part% "itho$t any modification' – It i% e%tab!i%hed "ith a%%ociati+e !ink% to

the origina! body part'

– ,ence a!! the ba%e-!e+e! parametric anda%%ociati+e capabi!itie% of CATIA and it%partner app!ication% are a+ai!ab!e to theFLUENT for CATIA $%er'

– If the $nder!ying geometry i% modified.the CFD mode! "i!! be $pdated

a$tomatica!!y'• /aintaining the princip!e of (L/

0prod$ct !ifecyc!e management1 i% acritica! de%ign feat$re for FLUENT forCATIA'


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Training Manual





FLUENT for CATIA Workbench 0cont2d1

• A +i%$a!i3ation of the

FLUENT for CATIA

"orkbench concept

o$t!ined in the pre+io$%

%!ide4 maintaining the (L/

princip!e• (art)*F!$ent(art ha%

associative links to the

origina! body part. and

e+erything i% done "itho$t

modifying the origina!

CATIA part

After !a$nching the FLUENT

for CATIA Workbenchigina! CATIA (art


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FLUENT for CATIA Specification Tree

• A!! men$% are contained in the FLUENTfor CATIA %pecification tree' U%er% ha+eacce%% to a!! the corre%ponding dia!ogboe% 0do$b!e c!ick1

• For eamp!e. $nder Finite E!ement /ode!.the fo!!o"ing option% are a+ai!ab!e4

– Node% and E!ement%4 acce%% to

me%h detai!% – (ropertie%4 define the f!$id6%o!id

type% for me%h part% 0for eamp!e.f!$id. %o!id or poro$% 3one%1

– /ateria!%4 define6edit materia!propertie%

– En+ironment4 define f!o" phy%ic%.geometry and me%h parameter%

– Gro$p4 modify bo$ndary type%

• Contet$a! men$ i% a+ai!ab!e by rightc!icking on any of the item% in the%pecification tree4 thi% men$ contain%command% a+ai!ab!e to the %et


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Defining the Geometry• F!o" +o!$me etraction from part%

– (art fi!e "ith a %ing!e 7ody

– (art fi!e "ith /$!tip!e 7odie%• Thi% "i!! be treated %ame a% an

a%%emb!y

• F!o" +o!$me etraction froma%%emb!y

– /ake %$re that a!! the part% are

a%%emb!ed "ith proper contactcon%traint%

• The 3ero-thickne%% "a!! i% nota!!o"ed for the f!o" +o!$meetraction

• FLUENT for CATIA #8 "orkbenchgenerate% FLUENT part% "itho$t

modifying the origina! CATIA part%.hence FLUENT for CATIA adhere%to the (L/ 0prod$ct !ifecyc!emanagement1 princip!e


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Training Manual





Defining the Geometry 0cont2d1• CAD geometrie% genera!!y ha+e %o!idpart% on!y' Comp$tationa! f!$iddynamic% 0CFD1 need% the 9+oid%:

thro$gh "hich the f!$id pa%%e%

• Symmetry4 if the geometry can be

c$t into t"o part% %$ch that each

part i% a mirror image of the other'

That c$tting p!ane i% the %ymmetry

p!ane• If the CAD geometry i% on!y the f!o"

+o!$me. %e!ect f!o" +o!$me in the

Geometry Definition !i%t. other"i%e

$%e %o!id mode!

• F!o" +o!$me ca%e4

– Face% %e!ection mode In!et ando$t!et face% can be %e!ected

mo+ing the c$r%or to high!ight and

to c!ick on the re%pecti+e face

Left c!ick again on a %e!ectedentity to $n%e!ect 0remo+e1 it

&ight c!ick to &emo+e a!!


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Etracting the F!o" #o!$me• So!id mode! ca%e4

– Face %e!ection mode4 In!et ando$t!et face% can be %e!ected'

– Edge %e!ection mode4 In %ome

ca%e% face %e!ection mode may

re%$!t in incorrect f!o"

+o!$me%. then edge %e!ection

%ho$!d be $%ed'• Dry reference %$rface4 a %o!id

%$rface $%ed a% a reference for

f!o" +o!$me etraction. "hich

not in contact "ith f!$id'

– For eamp!e. the o$ter

%$rface of a pipe i% a dry

reference %$rface'

• The edge% %e!ected for the

re%pecti+e in!et and o$t!et

%$rface% m$%t form a c!o%ed

!oop'


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Etracting the F!o" #o!$me 0cont2d1• Edge %e!ection mode 0cont2d14

– (ropagation type4

• No propagation4 When the

in!et6o$t!et i% compo%ed of a

%ing!e contin$o$% edge'

• (oint contin$ity4

a$tomatica!!y %e!ect% a!! the

edge% that are in pointcontin$ity "ith the %ing!e

%e!ected edge'

• Tangent contin$ity4

a$tomatica!!y %e!ect% a!! the

edge% that %ati%fy the

tangentia! contin$ity criteria

"ith the %ing!e %e!ected edge'• (oint contin$ity "ith %$rface

propagation4 a$tomatica!!y

%e!ect% edge% a%%ociated

"ith the in!et6o$t!et face%'




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Etracting the F!o" #o!$me 0cont2d1

• /erge a!! So!id% option4

– If the CAD geometry contain%m$!tip!e %o!id +o!$me% andthey to$ch each other. the+o!$me etraction proce%%prod$ce% a %eparate %o!id foreach part

– /erge a!! %o!id% "i!! prod$ce

one %o!id in%tead – In %ome comp!icated

geometrie% 0in "hich many%o!id +o!$me% to$ch eachother1. if the f!o" +o!$meetraction re%$!t% are notcorrect. yo$ can try to enab!e

the /erge a!! %o!id% optionbefore f!o" +o!$me etraction

– Thi% "i!! re%$!t in a %ing!e %o!idproperty for a!! the %o!id part%

/erge a!! %o!id% off

/erge a!! %o!id% on




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Training Manual






• Etracting the f!o" +o!$me

by $%ing on!y %$rface% – In the generati+e Shape

De%ign "orkbench. open the

%$rface geometry'

– Too!% Eterna! #ie" men$

to %e!ect the %$rface'

– S"itch to FLUENT for CATIA"orkbench and open the

geometry definition dia!og

bo. and %e!ect the f!o"

+o!$me a% the geometry

definition. and proceed to

generate the f!o" +o!$me'

Generati+e de%ign "orkbench




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Training Manual






• F!o" #o!$me etraction by

%e!ecting more than one face%$rro$nding the in!et6o$t!et

– Need to %et /erging Di%tance

a%

– ;') mm in Too!%5ption%

• &ed$ction in F!o" #o!$me

etraction time for 5ctree/e%he%

• Impro+ement% in geometry

Sp!itting a!gorithm

– /ore rob$%t for imported CAD

geometrie%

FLUENT f CATIA V5 V i 5 0


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Training Manual





Working "ith Symmetric and (eriodic Geometry

• When the geometry i%

%ymmetric or the f!o" ha%periodicity. a %ection bo$nded

by p!ane% of %ymmetry or

periodic p!ane% can be %e!ected

for ana!y%i%'

– Togg!e on the 9Geometry i%

Symmetric: 5ption' – Se!ect the p!ane% of %ymmetry

– In the Symmetry pane!. %e!ect

the


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Sp!it F!o" #o!$me% "ith Interior Face%

• Interior face%. if not contained in

the origina! geometry. can becreated from ei%ting edge% byright c!icking the GeometryDefinition on the %pecificationtree. then %e!ecting Sp!it f!o"+o!$me% in the contet$a! men$

• In the pane!. %e!ect the edge or

edge% "here the +o!$me %ho$!dbe %p!it. and 5= to +a!idate

• An interior face i% a!%o formed"here the +o!$me i% %p!it

• The interior face% are needed for%pecifying interna! bo$ndarycondition% 0%ee poro$% >$mp%.

fan%. and heat echanger%. etc'1

FLUENT f CATIA V5 V i 5 0 F# t f C ti $ t t


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Training Manual





Etracting the F!o" #o!$me4 A S$mmary

• Genera! G$ide!ine%4

– Choo%e the %o!id mode! optionif the imported geometry

contain% on!y the %o!id part%

– Choo%e the f!o" +o!$me option

if the imported geometry

contain% the f!$id region

• ?o$ can etract the f!o" +o!$mefor geometrie% "itho$t in!et% or

o$t!et% by enab!ing No In!et65$t!et

option in the Geometry Definition

pane! 0%ome !imitation% app!y. %ee

FLUENT for CATIA U%er2% G$ide for

detai!%1

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FfC v5.0 03 Defining Geometry

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