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BUG: Corrected use of rho if reference pressure is kinematic

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This commit is contained in:
andy 2012-03-12 08:47:16 +00:00
parent fe039d4cc8
commit f849409c20
2 changed files with 15 additions and 24 deletions
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27
src/postProcessing/functionObjects/utilities/pressureCoefficient/pressureCoefficient.C
View File

@ -34,9 +34,16 @@ defineTypeNameAndDebug(Foam::pressureCoefficient, 0);
// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
Foam::tmp<Foam::volScalarField> Foam::pressureCoefficient::rho() const
Foam::tmp<Foam::volScalarField> Foam::pressureCoefficient::rho
(
const volScalarField& p
) const
{
if (rhoName_ == "rhoInf")
if (p.dimensions() == dimPressure)
{
return(obr_.lookupObject<volScalarField>(rhoName_));
}
else
{
const fvMesh& mesh = refCast<const fvMesh>(obr_);
@ -51,14 +58,10 @@ Foam::tmp<Foam::volScalarField> Foam::pressureCoefficient::rho() const
mesh
),
mesh,
dimensionedScalar("rho", dimDensity, rhoRef_)
dimensionedScalar("rho", dimless, 1.0)
)
);
}
else
{
return(obr_.lookupObject<volScalarField>(rhoName_));
}
}
@ -76,8 +79,7 @@ Foam::pressureCoefficient::pressureCoefficient
obr_(obr),
active_(true),
pName_("p"),
rhoName_(word::null),
rhoRef_(-GREAT),
rhoName_("rho"),
magUinf_(0.0)
{
// Check if the available mesh is an fvMesh, otherwise deactivate
@ -114,12 +116,7 @@ void Foam::pressureCoefficient::read(const dictionary& dict)
if (active_)
{
pName_ = dict.lookupOrDefault<word>("pName", "p");
rhoName_ = dict.lookupOrDefault<word>("rhoName", "rho");
if (rhoName_ == "rhoInf")
{
dict.lookup("rhoInf") >> rhoRef_;
}
dict.lookup("magUinf") >> magUinf_;
}
@ -153,7 +150,7 @@ void Foam::pressureCoefficient::write()
obr_,
IOobject::NO_READ
),
p/(0.5*rho()*sqr(magUinf_))
p/(0.5*rho(p)*sqr(magUinf_))
);
pressureCoefficient.write();

12
src/postProcessing/functionObjects/utilities/pressureCoefficient/pressureCoefficient.H
View File

@ -77,21 +77,15 @@ class pressureCoefficient
//- Name of density field (optional)
word rhoName_;
//- Reference density needed for incompressible calculations [kg/m3]
scalar rhoRef_;
//- Free stream velocity magnitude [m/s]
scalar magUinf_;
// Private Member Functions
//- Return rho if rhoName is specified otherwise rhoRef
tmp<volScalarField> rho() const;
//- Return rhoRef if the pressure field is dynamic, i.e. p/rho
// otherwise return 1
scalar rho(const volScalarField& p) const;
//- Return 1 if the pressure field is kinematic, i.e. p/rho
// otherwise return rho from database
tmp<volScalarField> rho(const volScalarField& p) const;
//- Disallow default bitwise copy construct
pressureCoefficient(const pressureCoefficient&);