Lien and Kalitzin's v2-f turbulence model for incompressible and compressible flows, with a limit imposed on the turbulent viscosity given by Davidson et al. More...
Public Types | |
typedef BasicMomentumTransportModel::alphaField | alphaField |
typedef BasicMomentumTransportModel::rhoField | rhoField |
Public Types inherited from eddyViscosity< RASModel< BasicMomentumTransportModel > > | |
typedef BasicMomentumTransportModel::alphaField | alphaField |
typedef BasicMomentumTransportModel::rhoField | rhoField |
Public Types inherited from linearViscousStress< BasicMomentumTransportModel > | |
typedef BasicMomentumTransportModel::alphaField | alphaField |
typedef BasicMomentumTransportModel::rhoField | rhoField |
Public Member Functions | |
TypeName ("v2f") | |
Runtime type information. More... | |
v2f (const alphaField &alpha, const rhoField &rho, const volVectorField &U, const surfaceScalarField &alphaRhoPhi, const surfaceScalarField &phi, const viscosity &viscosity, const word &type=typeName) | |
Construct from components. More... | |
virtual | ~v2f () |
Destructor. More... | |
virtual bool | read () |
Read RASProperties dictionary. More... | |
tmp< volScalarField > | DkEff () const |
Return the effective diffusivity for k. More... | |
tmp< volScalarField > | DepsilonEff () const |
Return the effective diffusivity for epsilon. More... | |
virtual tmp< volScalarField > | k () const |
Return the turbulence kinetic energy. More... | |
virtual tmp< volScalarField > | epsilon () const |
Return the turbulence kinetic energy dissipation rate. More... | |
virtual tmp< volScalarField > | omega () const |
Return the turbulence specific dissipation rate. More... | |
virtual tmp< volScalarField > | v2 () const |
Return turbulence stress normal to streamlines. More... | |
virtual tmp< volScalarField > | f () const |
Return the damping function. More... | |
virtual void | correct () |
Solve the turbulence equations and correct the turbulence viscosity. More... | |
Public Member Functions inherited from eddyViscosity< RASModel< BasicMomentumTransportModel > > | |
eddyViscosity (const word &modelName, const alphaField &alpha, const rhoField &rho, const volVectorField &U, const surfaceScalarField &alphaRhoPhi, const surfaceScalarField &phi, const viscosity &viscosity) | |
Construct from components. More... | |
virtual | ~eddyViscosity () |
Destructor. More... | |
virtual tmp< volScalarField > | nut () const |
Return the turbulence viscosity. More... | |
virtual tmp< scalarField > | nut (const label patchi) const |
Return the turbulence viscosity on patch. More... | |
virtual tmp< volSymmTensorField > | sigma () const |
Return the Reynolds stress tensor [m^2/s^2]. More... | |
virtual void | validate () |
Validate the turbulence fields after construction. More... | |
Public Member Functions inherited from linearViscousStress< BasicMomentumTransportModel > | |
linearViscousStress (const word &modelName, const alphaField &alpha, const rhoField &rho, const volVectorField &U, const surfaceScalarField &alphaRhoPhi, const surfaceScalarField &phi, const viscosity &viscosity) | |
Construct from components. More... | |
virtual | ~linearViscousStress () |
Destructor. More... | |
virtual tmp< volSymmTensorField > | devTau () const |
Return the effective stress tensor. More... | |
virtual tmp< fvVectorMatrix > | divDevTau (volVectorField &U) const |
Return the source term for the momentum equation. More... | |
virtual tmp< fvVectorMatrix > | divDevTau (const volScalarField &rho, volVectorField &U) const |
Return the source term for the momentum equation. More... | |
Public Member Functions inherited from v2fBase | |
TypeName ("v2fBase") | |
Runtime type information. More... | |
v2fBase () | |
virtual | ~v2fBase () |
Destructor. More... | |
Protected Member Functions | |
tmp< volScalarField > | boundEpsilon () |
Bound epsilon and return Cmu*sqr(k) for nut. More... | |
virtual void | correctNut () |
Correct the eddy-viscosity nut. More... | |
tmp< volScalarField > | Ts () const |
Return time scale, Ts. More... | |
tmp< volScalarField > | Ls () const |
Return length scale, Ls. More... | |
Protected Attributes | |
dimensionedScalar | Cmu_ |
dimensionedScalar | CmuKEps_ |
dimensionedScalar | C1_ |
dimensionedScalar | C2_ |
dimensionedScalar | CL_ |
dimensionedScalar | Ceta_ |
dimensionedScalar | Ceps2_ |
dimensionedScalar | Ceps3_ |
dimensionedScalar | sigmaK_ |
dimensionedScalar | sigmaEps_ |
volScalarField | k_ |
Turbulence kinetic energy. More... | |
volScalarField | epsilon_ |
Turbulence dissipation. More... | |
volScalarField | v2_ |
Turbulence stress normal to streamlines. More... | |
volScalarField | f_ |
Damping function. More... | |
dimensionedScalar | v2Min_ |
dimensionedScalar | fMin_ |
Protected Attributes inherited from eddyViscosity< RASModel< BasicMomentumTransportModel > > | |
volScalarField | nut_ |
Lien and Kalitzin's v2-f turbulence model for incompressible and compressible flows, with a limit imposed on the turbulent viscosity given by Davidson et al.
The model solves for turbulence kinetic energy k and turbulence dissipation rate epsilon, with additional equations for the turbulence stress normal to streamlines, v2, and elliptic damping function, f.
The variant implemented employs N=6, such that f=0 on walls.
Wall boundary conditions are:
k = kLowReWallFunction epsilon = epsilonWallFunction v2 = v2WallFunction f = fWallFunction
These are applicable to both low- and high-Reynolds number flows.
Inlet values can be approximated by:
v2 = 2/3 k f = zero-gradient
References:
Lien, F. S., & Kalitzin, G. (2001). Computations of transonic flow with the v2f turbulence model. International Journal of Heat and Fluid Flow, 22(1), 53-61. Davidson, L., Nielsen, P., & Sveningsson, A. (2003). Modifications of the v2-f model for computing the flow in a 3D wall jet. Turbulence, Heat and Mass Transfer, 4, 577-584
The default model coefficients are
v2fCoeffs { Cmu 0.22; CmuKEps 0.09; C1 1.4; C2 0.3; CL 0.23; Ceta 70; Ceps2 1.9; Ceps3 -0.33; sigmaEps 1.3; sigmaK 1; }
Note: If the kLowReWallFunction is employed, a velocity variant of the turbulent viscosity wall function should be used, e.g. nutUWallFunction. Turbulence k variants (nutk...) for this case will not behave correctly.
typedef BasicMomentumTransportModel::alphaField alphaField |
v2f | ( | const alphaField & | alpha, |
const rhoField & | rho, | ||
const volVectorField & | U, | ||
const surfaceScalarField & | alphaRhoPhi, | ||
const surfaceScalarField & | phi, | ||
const viscosity & | viscosity, | ||
const word & | type = typeName |
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Construct from components.
Definition at line 77 of file v2f.C.
References Foam::bound(), v2f< BasicMomentumTransportModel >::boundEpsilon(), v2f< BasicMomentumTransportModel >::f_, v2f< BasicMomentumTransportModel >::fMin_, v2f< BasicMomentumTransportModel >::k_, Foam::type(), v2f< BasicMomentumTransportModel >::v2_, and v2f< BasicMomentumTransportModel >::v2Min_.
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Bound epsilon and return Cmu*sqr(k) for nut.
Definition at line 41 of file v2f.C.
References Foam::max(), and Foam::sqr().
Referenced by v2f< BasicMomentumTransportModel >::v2f().
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Correct the eddy-viscosity nut.
Implements eddyViscosity< RASModel< BasicMomentumTransportModel > >.
Definition at line 66 of file v2f.C.
References Foam::min(), and dictionary::New().
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Return time scale, Ts.
Definition at line 50 of file v2f.C.
References Foam::max(), and Foam::sqrt().
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Return length scale, Ls.
Definition at line 57 of file v2f.C.
References Foam::max(), Foam::pow(), Foam::pow025(), and Foam::pow3().
TypeName | ( | "v2f< BasicMomentumTransportModel >" | ) |
Runtime type information.
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Read RASProperties dictionary.
Implements eddyViscosity< RASModel< BasicMomentumTransportModel > >.
Definition at line 257 of file v2f.C.
References Foam::read().
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inline |
Return the effective diffusivity for k.
Definition at line 213 of file v2f.H.
References GeometricField< Type, PatchField, GeoMesh >::New(), and eddyViscosity< RASModel< BasicMomentumTransportModel > >::nut_.
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inline |
Return the effective diffusivity for epsilon.
Definition at line 223 of file v2f.H.
References GeometricField< Type, PatchField, GeoMesh >::New(), and eddyViscosity< RASModel< BasicMomentumTransportModel > >::nut_.
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Return the turbulence kinetic energy.
Implements eddyViscosity< RASModel< BasicMomentumTransportModel > >.
Definition at line 233 of file v2f.H.
References v2f< BasicMomentumTransportModel >::k_.
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Return the turbulence kinetic energy dissipation rate.
Definition at line 239 of file v2f.H.
References v2f< BasicMomentumTransportModel >::epsilon_.
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Return the turbulence specific dissipation rate.
Definition at line 245 of file v2f.H.
References v2f< BasicMomentumTransportModel >::Cmu_, v2f< BasicMomentumTransportModel >::epsilon_, v2f< BasicMomentumTransportModel >::k_, and GeometricField< Type, PatchField, GeoMesh >::New().
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Return turbulence stress normal to streamlines.
Implements v2fBase.
Definition at line 255 of file v2f.H.
References v2f< BasicMomentumTransportModel >::v2_.
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Return the damping function.
Implements v2fBase.
Definition at line 261 of file v2f.H.
References v2f< BasicMomentumTransportModel >::f_.
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Solve the turbulence equations and correct the turbulence viscosity.
Implements eddyViscosity< RASModel< BasicMomentumTransportModel > >.
Definition at line 282 of file v2f.C.
References Foam::fvc::absolute(), alpha(), Foam::bound(), fvConstraints::constrain(), Foam::MULES::correct(), Foam::fvm::ddt(), Foam::dev(), Foam::dimless, Foam::fvc::div(), Foam::fvm::div(), fvConstraints(), fvModels(), Foam::constant::universal::G, Foam::fvc::grad(), Foam::fvm::laplacian(), Foam::magSqr(), Foam::min(), dictionary::New(), nut, tmp< T >::ref(), rho, Foam::solve(), fvModels::source(), Foam::fvm::Sp(), Foam::sqr(), Foam::sqrt(), Foam::fvm::SuSp(), Foam::symm(), Foam::typedName(), and U.
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Definition at line 129 of file v2f.H.
Referenced by v2f< BasicMomentumTransportModel >::omega().
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Turbulence kinetic energy.
Definition at line 144 of file v2f.H.
Referenced by v2f< BasicMomentumTransportModel >::k(), v2f< BasicMomentumTransportModel >::omega(), and v2f< BasicMomentumTransportModel >::v2f().
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Turbulence dissipation.
Definition at line 147 of file v2f.H.
Referenced by v2f< BasicMomentumTransportModel >::epsilon(), and v2f< BasicMomentumTransportModel >::omega().
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Turbulence stress normal to streamlines.
Definition at line 150 of file v2f.H.
Referenced by v2f< BasicMomentumTransportModel >::v2(), and v2f< BasicMomentumTransportModel >::v2f().
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Damping function.
Definition at line 153 of file v2f.H.
Referenced by v2f< BasicMomentumTransportModel >::f(), and v2f< BasicMomentumTransportModel >::v2f().
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Definition at line 158 of file v2f.H.
Referenced by v2f< BasicMomentumTransportModel >::v2f().
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Definition at line 159 of file v2f.H.
Referenced by v2f< BasicMomentumTransportModel >::v2f().