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uniformDensityHydrostaticPressureFvPatchScalarField: pRefPoint now optional

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If pRefPoint is not specified hRef is used.  This provides compatibility with
the original prghUniformDensityHydrostaticPressureFvPatchScalarField BC.
This commit is contained in:
Henry Weller
2018-04-04 16:44:22 +01:00
parent 49cf7f8d19
commit 7143bbcc1d
2 changed files with 71 additions and 33 deletions
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64
src/finiteVolume/fields/fvPatchFields/derived/uniformDensityHydrostaticPressure/uniformDensityHydrostaticPressureFvPatchScalarField.C
View File

@ -41,7 +41,8 @@ uniformDensityHydrostaticPressureFvPatchScalarField
:
fixedValueFvPatchScalarField(p, iF),
rho_(0.0),
pRefValue_(0.0),
pRef_(0.0),
pRefPointSpecified_(false),
pRefPoint_(Zero)
{}
@ -54,11 +55,24 @@ uniformDensityHydrostaticPressureFvPatchScalarField
const dictionary& dict
)
:
fixedValueFvPatchScalarField(p, iF, dict),
rho_(readScalar(dict.lookup("rho"))),
pRefValue_(readScalar(dict.lookup("pRefValue"))),
pRefPoint_(dict.lookup("pRefPoint"))
{}
fixedValueFvPatchScalarField(p, iF, dict, false),
rho_(readScalar(dict.lookup("rhoRef"))),
pRef_(readScalar(dict.lookup("pRef"))),
pRefPointSpecified_(dict.found("pRefPoint")),
pRefPoint_(dict.lookupOrDefault<vector>("pRefPoint", Zero))
{
if (dict.found("value"))
{
fvPatchScalarField::operator=
(
scalarField("value", dict, p.size())
);
}
else
{
fvPatchField<scalar>::operator=(pRef_);
}
}
Foam::uniformDensityHydrostaticPressureFvPatchScalarField::
@ -72,7 +86,8 @@ uniformDensityHydrostaticPressureFvPatchScalarField
:
fixedValueFvPatchScalarField(ptf, p, iF, mapper),
rho_(ptf.rho_),
pRefValue_(ptf.pRefValue_),
pRef_(ptf.pRef_),
pRefPointSpecified_(ptf.pRefPointSpecified_),
pRefPoint_(ptf.pRefPoint_)
{}
@ -85,7 +100,8 @@ uniformDensityHydrostaticPressureFvPatchScalarField
:
fixedValueFvPatchScalarField(ptf),
rho_(ptf.rho_),
pRefValue_(ptf.pRefValue_),
pRef_(ptf.pRef_),
pRefPointSpecified_(ptf.pRefPointSpecified_),
pRefPoint_(ptf.pRefPoint_)
{}
@ -99,7 +115,8 @@ uniformDensityHydrostaticPressureFvPatchScalarField
:
fixedValueFvPatchScalarField(ptf, iF),
rho_(ptf.rho_),
pRefValue_(ptf.pRefValue_),
pRef_(ptf.pRef_),
pRefPointSpecified_(ptf.pRefPointSpecified_),
pRefPoint_(ptf.pRefPoint_)
{}
@ -116,10 +133,25 @@ void Foam::uniformDensityHydrostaticPressureFvPatchScalarField::updateCoeffs()
const uniformDimensionedVectorField& g =
db().lookupObject<uniformDimensionedVectorField>("g");
scalar ghRef = g.value() & pRefPoint_;
if (!pRefPointSpecified_)
{
const uniformDimensionedScalarField& hRef =
db().lookupObject<uniformDimensionedScalarField>("hRef");
ghRef =
(
mag(g.value()) > small
? (g & (cmptMag(g.value())/mag(g.value()))*hRef).value()
: 0
);
}
operator==
(
pRefValue_
+ rho_*((g.value() & patch().Cf()) - (g.value() & pRefPoint_))
pRef_
+ rho_*((g.value() & patch().Cf()) - ghRef)
);
fixedValueFvPatchScalarField::updateCoeffs();
@ -132,9 +164,13 @@ void Foam::uniformDensityHydrostaticPressureFvPatchScalarField::write
) const
{
fvPatchScalarField::write(os);
os.writeKeyword("rho") << rho_ << token::END_STATEMENT << nl;
os.writeKeyword("pRefValue") << pRefValue_ << token::END_STATEMENT << nl;
os.writeKeyword("pRefPoint") << pRefPoint_ << token::END_STATEMENT << nl;
os.writeKeyword("rhoRef") << rho_ << token::END_STATEMENT << nl;
os.writeKeyword("pRef") << pRef_ << token::END_STATEMENT << nl;
if (pRefPointSpecified_)
{
os.writeKeyword("pRefPoint")
<< pRefPoint_ << token::END_STATEMENT << nl;
}
writeEntry("value", os);
}

40
src/finiteVolume/fields/fvPatchFields/derived/uniformDensityHydrostaticPressure/uniformDensityHydrostaticPressureFvPatchScalarField.H
View File

@ -32,25 +32,25 @@ Description
calculated as:
\f[
p_{hyd} = p_{ref} + \rho g (x - x_{ref})
p_{hyd} = p_{ref} + \rho_{ref} g (x - x_{ref})
\f]
where
\vartable
p_{hyd} | Hydrostatic pressure [Pa]
p_{ref} | Reference pressure [Pa]
x_{ref} | Reference point in Cartesian co-ordinates
\rho | Density (assumed uniform)
g | Acceleration due to gravity [m/s2]
p_{hyd} | Hydrostatic pressure [Pa]
p_{ref} | Reference pressure [Pa]
x_{ref} | Reference point in Cartesian co-ordinates
\rho_{ref} | Density (assumed uniform)
g | Acceleration due to gravity [m/s2]
\endtable
Usage
\table
Property | Description | Required | Default value
rho | Uniform density [kg/m3] | yes |
pRefValue | Reference pressure [Pa] | yes |
pRefPoint | Reference pressure location | yes |
value | Initial value | yes |
rhoRef | Uniform density [kg/m3] | yes |
pRef | Reference pressure [Pa] | yes |
pRefPoint | Reference pressure location | no | hRef
value | Initial value | no | pRef
\endtable
Example of the boundary condition specification:
@ -58,10 +58,9 @@ Usage
<patchName>
{
type uniformDensityHydrostaticPressure;
rho rho;
pRefValue 1e5;
rhoRef 1000;
pRef 1e5;
pRefPoint (0 0 0);
value uniform 0; // Required initial value
}
\endverbatim
@ -94,9 +93,12 @@ class uniformDensityHydrostaticPressureFvPatchScalarField
scalar rho_;
//- Reference pressure
scalar pRefValue_;
scalar pRef_;
//- Reference pressure location
//- True if the reference pressure location is specified
bool pRefPointSpecified_;
//- Optional reference pressure location
vector pRefPoint_;
@ -190,15 +192,15 @@ public:
}
//- Return the reference pressure
scalar pRefValue() const
scalar pRef() const
{
return pRefValue_;
return pRef_;
}
//- Return reference to the reference pressure to allow adjustment
scalar& pRefValue()
scalar& pRef()
{
return pRefValue_;
return pRef_;
}
//- Return the pressure reference location