LamBremhorstKE模型
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请教各位老师,open foam在使用低雷诺数湍流模型LamBremhorstKE时,需不需要选择壁面函数?
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@lambs 理论上低雷诺数模型无需壁面函数。但在OpenFOAM中,最好采用壁面函数,例如对K方程采用kLowReWallFunction,epsilon方程采用epsilonLowReWallFunction。
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@dzw05 老师0文件夹下的边界条件f,nuTilda,omega,v2是什么意思啊,该怎么填呢
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@lambs 其实这是不同湍流模型用到的变量。f和v2是v2f湍流模型,nuTilda是SA模型的变量;k和omega是k-omega模型的变量。nut则是湍流粘性,所有湍流模型都会用到。
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@dzw05 就是说不是所有的文件都有用,只需要填写自己使用模型的变量的边界条件就可以是吗(在LB模型中只填写nut,k,epsilon,p,u)
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我在使用simpleFoam运行这个模型时出现了这样的错误,这是为什么?
--> FOAM FATAL ERROR: request for volScalarField::Internal LamBremhorstKE:G from objectRegistry region0 failed available objects of type volScalarField::Internal are 8 ( nut yWall k nu p (sqr((1-exp((-0.0165*((sqrt(k)*yWall)|nu)))))*(1+(20.5|((sqr(k)|(nu*epsilon))+1e-15)))) (sqr(k)|(nu*epsilon)) epsilon ) From function const Type& Foam::objectRegistry::lookupObject(const Foam::word&) const [with Type = Foam::DimensionedField<double, Foam::volMesh>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/OpenFOAM/lnInclude/objectRegistryTemplates.C at line 193. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::DimensionedField<double, Foam::volMesh> const& Foam::objectRegistry::lookupObject<Foam::DimensionedField<double, Foam::volMesh> >(Foam::word const&) const at ??:? #3 Foam::epsilonLowReWallFunctionFvPatchScalarField::calculate(Foam::turbulenceModel const&, Foam::List<double> const&, Foam::fvPatch const&, Foam::Field<double>&, Foam::Field<double>&) at ??:? #4 Foam::epsilonWallFunctionFvPatchScalarField::calculateTurbulenceFields(Foam::turbulenceModel const&, Foam::Field<double>&, Foam::Field<double>&) at ??:? #5 Foam::epsilonWallFunctionFvPatchScalarField::updateCoeffs() at ??:? #6 Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh>::Boundary::evaluate() at ??:? #7 Foam::incompressible::RASModels::LamBremhorstKE::correctNut(Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> const&) at ??:? #8 Foam::incompressible::RASModels::LamBremhorstKE::correctNut() at ??:? #9 ? at ??:? #10 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #11 ? at ??:?
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错误消息提示你的求解器里面没有这个场的声明。
没用过这个求解器,我在
simpleFoam/pitzDaily
下面测试了一下可以运行
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@东岳 老师,是这个volScalarField吗?该怎么声明呢?
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@lambs 这个算例后来验证的如何了?