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tidying - using rasModel to provide fields instead of db lookup, and cache yPlusLam_

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This commit is contained in:
andy 2009-08-14 13:17:33 +01:00
parent a1d6fdf994
commit c03788a9d3
2 changed files with 71 additions and 63 deletions
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105
src/turbulenceModels/incompressible/RAS/derivedFvPatchFields/wallFunctions/omegaWallFunctions/omegaWallFunction/omegaWallFunctionFvPatchScalarField.C
View File

@ -40,7 +40,7 @@ namespace incompressible
namespace RASModels
{
// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
// * * * * * * * * * * * * Protected Member Functions * * * * * * * * * * * //
void omegaWallFunctionFvPatchScalarField::checkType()
{
@ -56,6 +56,32 @@ void omegaWallFunctionFvPatchScalarField::checkType()
}
scalar omegaWallFunctionFvPatchScalarField::calcYPlusLam
(
const scalar kappa,
const scalar E
) const
{
scalar ypl = 11.0;
for (int i=0; i<10; i++)
{
ypl = log(E*ypl)/kappa;
}
return ypl;
}
void omegaWallFunctionFvPatchScalarField::writeLocalEntries(Ostream& os) const
{
writeEntryIfDifferent<word>(os, "G", "RASModel::G", GName_);
os.writeKeyword("Cmu") << Cmu_ << token::END_STATEMENT << nl;
os.writeKeyword("kappa") << kappa_ << token::END_STATEMENT << nl;
os.writeKeyword("E") << E_ << token::END_STATEMENT << nl;
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
omegaWallFunctionFvPatchScalarField::omegaWallFunctionFvPatchScalarField
@ -65,14 +91,11 @@ omegaWallFunctionFvPatchScalarField::omegaWallFunctionFvPatchScalarField
)
:
fixedInternalValueFvPatchField<scalar>(p, iF),
UName_("U"),
kName_("k"),
GName_("RASModel::G"),
nuName_("nu"),
nutName_("nut"),
Cmu_(0.09),
kappa_(0.41),
E_(9.8)
E_(9.8),
yPlusLam_(calcYPlusLam(kappa_, E_))
{
checkType();
}
@ -87,14 +110,11 @@ omegaWallFunctionFvPatchScalarField::omegaWallFunctionFvPatchScalarField
)
:
fixedInternalValueFvPatchField<scalar>(ptf, p, iF, mapper),
UName_(ptf.UName_),
kName_(ptf.kName_),
GName_(ptf.GName_),
nuName_(ptf.nuName_),
nutName_(ptf.nutName_),
Cmu_(ptf.Cmu_),
kappa_(ptf.kappa_),
E_(ptf.E_)
E_(ptf.E_),
yPlusLam_(ptf.yPlusLam_)
{
checkType();
}
@ -108,14 +128,11 @@ omegaWallFunctionFvPatchScalarField::omegaWallFunctionFvPatchScalarField
)
:
fixedInternalValueFvPatchField<scalar>(p, iF, dict),
UName_(dict.lookupOrDefault<word>("U", "U")),
kName_(dict.lookupOrDefault<word>("k", "k")),
GName_(dict.lookupOrDefault<word>("G", "RASModel::G")),
nuName_(dict.lookupOrDefault<word>("nu", "nu")),
nutName_(dict.lookupOrDefault<word>("nut", "nut")),
Cmu_(dict.lookupOrDefault<scalar>("Cmu", 0.09)),
kappa_(dict.lookupOrDefault<scalar>("kappa", 0.41)),
E_(dict.lookupOrDefault<scalar>("E", 9.8))
E_(dict.lookupOrDefault<scalar>("E", 9.8)),
yPlusLam_(calcYPlusLam(kappa_, E_))
{
checkType();
}
@ -127,14 +144,11 @@ omegaWallFunctionFvPatchScalarField::omegaWallFunctionFvPatchScalarField
)
:
fixedInternalValueFvPatchField<scalar>(owfpsf),
UName_(owfpsf.UName_),
kName_(owfpsf.kName_),
GName_(owfpsf.GName_),
nuName_(owfpsf.nuName_),
nutName_(owfpsf.nutName_),
Cmu_(owfpsf.Cmu_),
kappa_(owfpsf.kappa_),
E_(owfpsf.E_)
E_(owfpsf.E_),
yPlusLam_(owfpsf.yPlusLam_)
{
checkType();
}
@ -147,14 +161,12 @@ omegaWallFunctionFvPatchScalarField::omegaWallFunctionFvPatchScalarField
)
:
fixedInternalValueFvPatchField<scalar>(owfpsf, iF),
UName_(owfpsf.UName_),
kName_(owfpsf.kName_),
GName_(owfpsf.GName_),
nuName_(owfpsf.nuName_),
nutName_(owfpsf.nutName_),
Cmu_(owfpsf.Cmu_),
kappa_(owfpsf.kappa_),
E_(owfpsf.E_)
E_(owfpsf.E_),
yPlusLam_(owfpsf.yPlusLam_)
{
checkType();
}
@ -169,28 +181,32 @@ void omegaWallFunctionFvPatchScalarField::updateCoeffs()
return;
}
const label patchI = patch().index();
const RASModel& rasModel = db().lookupObject<RASModel>("RASProperties");
const scalar yPlusLam = rasModel.yPlusLam(kappa_, E_);
const scalarField& y = rasModel.y()[patch().index()];
const scalarField& y = rasModel.y()[patchI];
const scalar Cmu25 = pow(Cmu_, 0.25);
volScalarField& G = const_cast<volScalarField&>
(db().lookupObject<volScalarField>(GName_));
volScalarField& G =
const_cast<volScalarField&>(db().lookupObject<volScalarField>(GName_));
volScalarField& omega = const_cast<volScalarField&>
(db().lookupObject<volScalarField>(dimensionedInternalField().name()));
DimensionedField<scalar, volMesh>& omega =
const_cast<DimensionedField<scalar, volMesh>&>
(
dimensionedInternalField()
);
const scalarField& k = db().lookupObject<volScalarField>(kName_);
const tmp<volScalarField> tk = rasModel.k();
const volScalarField& k = tk();
const scalarField& nuw =
patch().lookupPatchField<volScalarField, scalar>(nuName_);
const scalarField& nuw = rasModel.nu().boundaryField()[patchI];
const scalarField& nutw =
patch().lookupPatchField<volScalarField, scalar>(nutName_);
const tmp<volScalarField> tnut = rasModel.nut();
const volScalarField& nut = tnut();
const scalarField& nutw = nut.boundaryField()[patchI];
const fvPatchVectorField& Uw =
patch().lookupPatchField<volVectorField, vector>(UName_);
const fvPatchVectorField& Uw = rasModel.U().boundaryField()[patchI];
const scalarField magGradUw = mag(Uw.snGrad());
@ -203,7 +219,7 @@ void omegaWallFunctionFvPatchScalarField::updateCoeffs()
omega[faceCellI] = sqrt(k[faceCellI])/(Cmu25*kappa_*y[faceI]);
if (yPlus > yPlusLam)
if (yPlus > yPlusLam_)
{
G[faceCellI] =
(nutw[faceI] + nuw[faceI])
@ -226,14 +242,7 @@ void omegaWallFunctionFvPatchScalarField::updateCoeffs()
void omegaWallFunctionFvPatchScalarField::write(Ostream& os) const
{
fixedInternalValueFvPatchField<scalar>::write(os);
writeEntryIfDifferent<word>(os, "U", "U", UName_);
writeEntryIfDifferent<word>(os, "k", "k", kName_);
writeEntryIfDifferent<word>(os, "G", "RASModel::G", GName_);
writeEntryIfDifferent<word>(os, "nu", "nu", nuName_);
writeEntryIfDifferent<word>(os, "nut", "nut", nutName_);
os.writeKeyword("Cmu") << Cmu_ << token::END_STATEMENT << nl;
os.writeKeyword("kappa") << kappa_ << token::END_STATEMENT << nl;
os.writeKeyword("E") << E_ << token::END_STATEMENT << nl;
writeLocalEntries(os);
writeEntry("value", os);
}

29
src/turbulenceModels/incompressible/RAS/derivedFvPatchFields/wallFunctions/omegaWallFunctions/omegaWallFunction/omegaWallFunctionFvPatchScalarField.H
View File

@ -55,23 +55,13 @@ class omegaWallFunctionFvPatchScalarField
:
public fixedInternalValueFvPatchField<scalar>
{
// Private data
protected:
//- Name of velocity field
word UName_;
//- Name of turbulence kinetic energy field
word kName_;
// Protected data
//- Name of turbulence generation field
word GName_;
//- Name of laminar viscosity field
word nuName_;
//- Name of turbulent viscosity field
word nutName_;
//- Cmu coefficient
scalar Cmu_;
@ -81,11 +71,20 @@ class omegaWallFunctionFvPatchScalarField
//- E coefficient
scalar E_;
//- Y+ at the edge of the laminar sublayer
scalar yPlusLam_;
// Private member functions
// Protected member functions
//- Check the type of the patch
void checkType();
virtual void checkType();
//- Calculate the Y+ at the edge of the laminar sublayer
virtual scalar calcYPlusLam(const scalar kappa, const scalar E) const;
//- Write local wall function variables
virtual void writeLocalEntries(Ostream&) const;
public:
@ -168,7 +167,7 @@ public:
// I-O
//- Write
void write(Ostream&) const;
virtual void write(Ostream&) const;
};