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    icem

    Դҵ ʱ䣺2016-06-15

    ƪһICEM CFD

    ICEM CFDкϲ

    ڽṹʮָӵļģָܹͣɶɶ˷ֱ񻮷֣ܹװǺܶĹˡʵܶǰд˹ܡҪ˵ICEM CFDʵִ˹ܡ

    Ϊ˼һdz򵥵ģͽʾȻӵģ͵ĴʽҲͬġҪļģͼ1ʾһL鱻и3ݡֱ𵼳Ϊ3ͬļļͼбʾ˳ֱ𵼳Ϊ1.x_t2.x_t3.x_tȻĸʽҲ޷ͬһϽиװĹлڶλ⡣ͬһиļ򲻻ڼ궨λ⡣

    ͼ1 ԭʼ ͼ2 1ɵͼ3

    11.x_t뵽ICEM CFDн񻮷֡עǧ֤λһ£мǡ

    һ壬񻮷ַͲ˵ˡԤͼ2ʾѡ˵File > Mesh > Load From Blocking

    2

    ѡFile > Mesh >Save Mesh AsﱣɵΪ1.unsװʱҪõļ

    3ͬIJģ2ģ3ļͬʱļΪ2.uns3.uns

    ͼ4 ģ2 ͼ5 ģ3

    ȵ1.uns˵File > Mesh >Open Meshѡ2ļ1.unsģ1

    ͬIJ˵ѡ2.unsᵯԻͼ6ʾעʱѡMergeѡReplaceĻֻᵼģ2񣬽ģ1滻ⲻҪġͬIJ赼3.unsͬѡMergeͼ7ʾ

    ͼ6 Ի ͼ7 ȫģ

    5

    Գ淽ʽԽfluentСͼ8ϢԿȫû⡣

    ͼ8 FluentʾϢ ͼ9 Fluentʾ

    FLUENTеͼ9ʾҪѵǣΪFLUENTʹЩҪICEM CFDȷñ߽ơƵӦPartԽԪpartķʽд

    OK󹦸ɣô򵥡ʵܽϲܶ࣬TGrid

    HyperMeshַҪڸģϣԽģͷֳɶ֣ɶ˶һ֡ҲDzйһְɣǺǡ

    ICEM CFD񻮷е

    νĻָģͬʱڽṹǽṹ

    ûҪڣڸӵļΣǿԽֽɶΣʺϻֽṹIJýṹ񻮷ַʽڷdzӵIJ֣ʹ÷ǽṹʽл֡ ȻûҲһЩȱ㣺λdzҪһЩʽиơڽĴҲһЩ⡣

    ˵˵ICEM CFDнл񻮷ֵһ㲽衣ͨΪ

    1׼ڱǶεΪʽ򵥣ﲻۡҪ˵һļΣҪICEM CFDнзָɶ֡õIJҪICEM CFDļδܣ㡢Լи

    2partһʵͦҪġһûãеǾᡣһҪֽɶֱַ벻ͬpartСͬʱ򴴽body

    ע⣬

    Ҫ潫岿ַգͬʱҪŵһpartУΪĽڵϲҪʹõ

    3blockעﴴblockʱҪѡ񻮷ֽṹļΡ

    Ϲ󣬾ͿԷֱ񻮷ˡ

    һ⣺Ĵ

    ͬʽֻͬ˵cfxfluentICEM CFDCFXַ֧dzãֱӽ񵼳CFXܹʶinterfaceԣcfx-preinterfaceͿԽͨˡFLUENTͬˣֱֻܴʶinterface޷ijinteriorֻһ棬޷interfaceԣ޷ͨˣҪICEM CFDжԽãijinterior

    ڶ⣺

    ڽֱӽڵϲԼ׵µʵICEM CFDеEdit MeshнעҪʹedit meshҲ˵岿Ҫͨfile>mesh>load from blocking˳ͼʾ

    ǿԽup to valueֵøһЩ0.5ϡ

    ·Ĵͨǹ̶hexa_8,quad_4Լpyra_5Ȼ˳tri_3tetra_4еĶй˳巽ҲûȷԼгԡַԱȽЧ߽λ

    ƪICEM CFD

    ICEM CFD

    1ָ

    򴴽潫ηָɼ1ͼ2󲿷֣1Զ񣬼2ڷֿ黮

    뼸Σˣڡڡֽ桢Part͸ʾΡ 3Զ

    ڼ1ﴴBody´PartУFLUID1ȻԶ1 4ֿ黮

    ؼ11ֻʾ2Լ2Block´PartУFLUID2ؿԤ񣨰ԤO񣩣Ȼתɽṹ2ǽṹ1ϲmergeFile Mesh Load from Blocking merge

    ֻʾֽPart Edit Mesh Merge Nodes Merge Mesh

    Merge surface mesh partsѡֽPartнڵϲ Accept

    Mesh Compute Mesh Prism Mesh

    > Select MeshѡExisting Mesh

    > Select Parts for Prism Layer

    ѡвһԲ棬ֱÿ 7ѡ

    ߽û

    Output Select Solver

    > Output SolverѡFluent_V6

    > Common Structural SolverĬΪNASTRAN

    > Set As DefaultΪĬãԹѡ

    8÷ֽ߽

    Output Boundary Conditions

    > VolumeΪFluidɣ

    > Surfaces߽磩 Mixed/unknown INTERFACE Create new ѡinteriorڲ棩 Accept

    עICEM CFDнֽóڲ棨ΪFLUENT޷ڲ棩 9߽ͬϣ

    10

    Edit Mesh Display Mesh Quality

    > CriterionQualityͳƷʣĬã

    Refresh Histogramˢֱͼ

    ICEM CFD ĬunsļFluentֱܹӶmeshļԱͨдmeshļ

    Write input Save current project firstԻ Yesunsļ 򿪡Ի 򿪡Ĭļ Fluent V6Ի ޸meshļOutput file޸./ݣ DonemeshļֱӶFluentУ

    ƪICEM񷽷

    ICEM񷽷

    ֪ICEM CFDǿ񻮷ͬ񻮷һICEMṩ˽ṹͷǽṹ񻮷ֹܡṹһϸߣֵȣǶڹڸӵļ壬ȱҲԶ׼ģҪķѴ˼ĻַʽҾɾֲƫ͵ľ档ǽṹ١ַܻʽǵʽһΣֱֵɢ ôûиõ񻮷ַʽܹṹͷǽṹŵһ𣬼ֺֿõ߼㾫أǿ϶ġCFDרӪϰоֵ꣬񻮷ָǷdzϤܽICEM CFDֺļ----ͻʹ÷ְ취˵иӼ壬ܵģϣܹΪ򼸺νṹڸӡ޷ϸṹȴֲʹ÷ǽṹͬṩµ˼·Ǵͨѹأ

    һ

    ICEM CFDһ¼ԭȻͨȽ㷨󲿷ڵ顢ϳֻڼηdzӻ߱ԵشŻᱣɵ񼯺ƣȽʡʱ䣻Ϊ󲿷ǽṹȫ

    ֱܹ֤㾫ȡ֮⣬ĻϼԼ60%-80%dzڳüԴӿʱ䡣

    Чͼʾ

    (ͼ1)δʹ

    ͼ2ʹ

    ̺͹̽ļС12

    һЩ̻ѧ⣬ξdz򡢼򵥣ʺʹýṹ񻮷֣򼸺״ܸӣʹ÷ǽṹ񻮷ָסΣ

    εľͷdzڻз---ԭǽ棨interface棩λֳɲͬȻֱڸʹýṹǽṹ󽫸ֵڵ롣ϸļС

    ƪģICEM CFD ֿ񻮷

    ICEM CFD ֿ񻮷

    ֿ񻮷ֲ裺뼸 ֿ Ԥ O ߽

    0

    ICEM CFD File Change Working Directoryı乤Ŀ¼ע·ȫΪӢģ File New Project ע⹤ΪӢģ

    1 뼸

    File Import Geometry STEP/IGES ѡ񼸺ļ Apply ͸ʾ

    2 ˣμ飩

    Geometry Repair Geometry Build Diagnostic Topology

    > Toleranceݲָ֮϶һ㱣ĬãҲڣ

    > Filter points˵㣬֮߼нС趨Ƕȣ˵ϵĵ㣩

    > Filter curvesߣ֮߼нС趨Ƕȣ˵֮ߣ

    > м˹Ŀǽмμ飬ͬʱԶߡ

    > ɫ߱ʾߣ˵ȱʧĻ֮ķ϶ݲɫ߱ʾ˫ߣָϣ˵֮ļ϶ݲ֮ڣҪģ͡

    > ɫ߱ʾɱߣɫ߱ʾߣɫ߱ʾ˵ıߣdormant

    3 Part

    ģPartĿ¼һ Create Part Part ѡ мȷ

    > Part ൱һǿPartӼκͨڼμ޲֮󣬼֯һһPartĬ£мʵGEOM PartС

    > 봴 INLET

    icem

    ڣ OUTLETڣPartʶΪFLUENT ûԶʶںͳڣǵCFXԲô

    > һ㴴ΪWALL߽磬ڴ߽񣩡SYMԳ棩INTERFACEֽ棩INTERIOR (ڲ)ҲԽҪܵ棬ΪPart

    4 ֿBlock

    1飨ѡ

    Blocking Create Block

    > PartעⲻѡPart飬ΪԿķʽ֯ģҿһµĵPartУԱһPartÿ飬FLUID

    > Type3D Bounding Boxά߽УĬã

    > Entitiesʵ壬ĬΪգ

    2ָ飨ѡ

    Blocking Split Block

    > Split MethodScreen selectѡı߽иཻгһڱߣ

    > Split MethodPrescribed pointѡ񼸺εиཻгһڱߣ

    3ɾ飨ѡ

    Blocking Delete Block ѡҪɾĿ мȷ

    Blocking Associate Associate Edge to Curve

    > Edge(s)ѡϵıߣעѡ> мȷ

    > Curve(s)ѡϵߣעѡ> мȷ

    > ϵı뼸ϵ߽йõĿϵı߻ɫϵߵɫһ㲻䡣

    5ƶ㣨ѡ

    Blocking Move Vertex Move Vertex

    > ֱѡҪƶĶ㣬ƶϵĶӦλ > мȷ

    > ɫıߺͶ㣨ԼSurfaceЩֻڸļƶ

    > ɫ㣨ԼCurveЩֻӳƶ

    > ɫ㣨ԼεPointǸı򲻿ƶ

    6ԶָԶ룬ѡ

    Blocking Associate Snap Project Vertices

    > Vertex selectAll VisibleпɼĬϹѡ

    > Move O-Grid nodesƶOϵĶ㣬һ㲻ѡ

    5

    Ԫߴ

    Mesh Global Mesh Setup Global Mesh Size

    > Scale FactorӣĬֵΪ1ʵʵԪߴ Ԫߴ ӣ

    > Max elementԪߴ磬ĬֵΪ0Ϊ2ָԶԲҲԱĬֵ0 > Curvature/Proximity based Refinementʱ仯Ӧܣ

    > EnabledģָԶС׽ϸڣֻڼα޹صķ

    > Element in gapüխ϶ԪĿһ㱣Ĭã

    > RefinementԲϲõԪϸֳߴﵽȫСֵ

    > Ignore Wall ThicknessԱںһ㲻ѡ

    2ȫ񻮷ֲ

    Mesh Global Mesh Setup Volume Meshing Parameters

    > Mesh TypeTetra/Mixed/ϣ壬壬֮壨

    ɣĬã

    Hexa-Dominantռţɵ壬ıʼϺãʱڲԲܹܺ㾲̬εҪ

    CartesianѿԶ沿ͶӰ棨ĵ㲻棩ٶ壨棩ܹͣԴ϶ͿףʶǰڿŽ׶Σ

    > Mesh MethodRobustOctree³-˲Ӽοʼ伸Σϵ Faces ͶӰϵ Surfacesֻܹϸڡ϶СףĬã

    QuickDelaunay-ƽõı񣬴бʼ

    SmoothAdvancing Frontݶȹ˳߶ȱ仯ӽ൱ʱ䳤бʼ

    TGridFLUENT㷨潥ɣڲٹɣбʼ

    Blocking Pre-Mesh Params Update Sizes

    > Update AllãĬϹѡ

    Applyÿ޸˿Ԥ󣬶иãóµԪ

    ģйѡblockingĿ¼µPre-MeshĿɡ

    Blocking Pre-Mesh Params Edge Params

    Edgeѡϵıߣ

    NodesϵĽڵ

    Copy ParametersƲһ㹴ѡ

    Method > To All Parallel edgesøƵƽлԵıϣһ㹴ѡ

    Applyעмú󣬲ҪٸãֱԤ񣬷ܲЧ

    ģ¹ѡblockingĿ¼µPre-MeshĿɡ

    Blocking Pre-Mesh Quality Histograms

    > CriterionDeterminant 222ʽĬã

    7O

    1OԲμΣ

    Blocking Split Block Ogrid Block

    > Select Block(s)һѡеĿ飬ѡҪOĿ飩

    > Select Face(s)ѡпͳ棬ѡм棩

    > ںͳϣɫԭȿϵıߣСһĺɫǴO͸塣

    2C԰ԲμΣ

    Blocking Split Block Ogrid Block

    > Select Block(s)һѡеĿ飬ѡҪCĿ飩

    > Select Face(s)ѡͳ棬еĵ棬Գϵ棬ѡм棩 > ںͳϣɫԭȿϵıߣСһĺɫǴO͸塣

    3ԤO

    ģٴιѡblockingĿ¼µPre-MeshĿɡ

    4޸O

    Blocking Edit Block Modify Ogrid

    > MethodRescale OgridĬã

    > Edge(s)ѡO뼸αԵߣ

    > Absolute distanceԾ룬һҪѡ

    > Offset (λƣ޸Oߵijȣ

    Blocking Pre-Mesh Params Update Sizes

    > Update AllãĬϹѡ

    Applyÿ޸˿Ԥ󣬶иãóµԪ

    5ԤO

    Blocking Pre-Mesh Params Edge Params

    Edgeѡϵıߣ

    NodesϵĽڵ

    Copy ParametersƲһ㹴ѡ

    Method > To All Parallel edgesøƵƽлԵıϣһ㹴ѡ

    Applyעмú󣬲ҪٸãֱԤ񣬷ܲЧ

    6ԤO

    ģ¹ѡblockingĿ¼µPre-MeshĿɡ

    7ԤO

    Blocking Pre-Mesh Quality Histograms

    > CriterionDeterminant 222ʽĬã

    Mesh Compute Mesh Prism Mesh

    > Select MeshѡExisting Mesh

    > Select Parts for Prism Layer

    ѡҪPartֱÿPartı߽

    > HeightܺȻ߶ȣһΪ1

    > Height Ratio߶ȱʣһΪ1.2

    > Num Layers߽һΪ3

    Compute ɱ߽

    9

    1ɽṹ

    File Mesh Load from Blocking񣬿

    2ɷǽṹ

    ģһblockingĿ¼µPre-MeshĿ Convert to Unstruct Mesh

    10 ļ

    úñ߽ʱ

    Output Select Solver

    > Output SolverѡFluent_V6

    > Common Structural SolverĬΪNASTRAN

    > Set As DefaultΪĬãԹѡ

    Write input Save current project firstԻ Yesunsļ 򿪡Ի 򿪡Ĭļ Fluent V6Ի Grid dimensionѡ3Dά񣩡 ޸ļOutput file޸./ݣ DoneťmeshļֱӶFluentУ