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pressureInletOutletVelocity/rotatingPressureInletOutletVelocity: Set the normal component of the inlet velocity from the flux rather than the zero-gradient velocity

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This commit is contained in:
Henry
2013-11-26 12:44:57 +00:00
parent 0ec21dd1a3
commit 0de0f137e3
4 changed files with 143 additions and 63 deletions
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97
src/finiteVolume/fields/fvPatchFields/derived/pressureInletOutletVelocity/pressureInletOutletVelocityFvPatchVectorField.C
View File

@ -2,7 +2,7 @@
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2011 OpenFOAM Foundation
\\ / A nd | Copyright (C) 2013 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
@ -25,10 +25,10 @@ License
#include "pressureInletOutletVelocityFvPatchVectorField.H"
#include "addToRunTimeSelectionTable.H"
#include "fvPatchFieldMapper.H"
#include "volFields.H"
#include "surfaceFields.H"
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::pressureInletOutletVelocityFvPatchVectorField::
@ -38,12 +38,13 @@ pressureInletOutletVelocityFvPatchVectorField
const DimensionedField<vector, volMesh>& iF
)
:
directionMixedFvPatchVectorField(p, iF),
phiName_("phi")
mixedFvPatchVectorField(p, iF),
phiName_("phi"),
rhoName_("rho")
{
refValue() = vector::zero;
refValue() = *this;
refGrad() = vector::zero;
valueFraction() = symmTensor::zero;
valueFraction() = 0.0;
}
@ -56,8 +57,9 @@ pressureInletOutletVelocityFvPatchVectorField
const fvPatchFieldMapper& mapper
)
:
directionMixedFvPatchVectorField(ptf, p, iF, mapper),
phiName_(ptf.phiName_)
mixedFvPatchVectorField(ptf, p, iF, mapper),
phiName_(ptf.phiName_),
rhoName_(ptf.rhoName_)
{
if (ptf.tangentialVelocity_.size())
{
@ -74,8 +76,9 @@ pressureInletOutletVelocityFvPatchVectorField
const dictionary& dict
)
:
directionMixedFvPatchVectorField(p, iF),
phiName_(dict.lookupOrDefault<word>("phi", "phi"))
mixedFvPatchVectorField(p, iF),
phiName_(dict.lookupOrDefault<word>("phi", "phi")),
rhoName_(dict.lookupOrDefault<word>("rho", "rho"))
{
fvPatchVectorField::operator=(vectorField("value", dict, p.size()));
@ -92,7 +95,7 @@ pressureInletOutletVelocityFvPatchVectorField
}
refGrad() = vector::zero;
valueFraction() = symmTensor::zero;
valueFraction() = 0.0;
}
@ -102,8 +105,9 @@ pressureInletOutletVelocityFvPatchVectorField
const pressureInletOutletVelocityFvPatchVectorField& pivpvf
)
:
directionMixedFvPatchVectorField(pivpvf),
mixedFvPatchVectorField(pivpvf),
phiName_(pivpvf.phiName_),
rhoName_(pivpvf.rhoName_),
tangentialVelocity_(pivpvf.tangentialVelocity_)
{}
@ -115,8 +119,9 @@ pressureInletOutletVelocityFvPatchVectorField
const DimensionedField<vector, volMesh>& iF
)
:
directionMixedFvPatchVectorField(pivpvf, iF),
mixedFvPatchVectorField(pivpvf, iF),
phiName_(pivpvf.phiName_),
rhoName_(pivpvf.rhoName_),
tangentialVelocity_(pivpvf.tangentialVelocity_)
{}
@ -127,8 +132,8 @@ void Foam::pressureInletOutletVelocityFvPatchVectorField::
setTangentialVelocity(const vectorField& tangentialVelocity)
{
tangentialVelocity_ = tangentialVelocity;
const vectorField n(patch().nf());
refValue() = tangentialVelocity_ - n*(n & tangentialVelocity_);
vectorField n(patch().nf());
tangentialVelocity_ -= n*(n & tangentialVelocity_);
}
@ -137,7 +142,7 @@ void Foam::pressureInletOutletVelocityFvPatchVectorField::autoMap
const fvPatchFieldMapper& m
)
{
directionMixedFvPatchVectorField::autoMap(m);
mixedFvPatchVectorField::autoMap(m);
if (tangentialVelocity_.size())
{
tangentialVelocity_.autoMap(m);
@ -151,7 +156,7 @@ void Foam::pressureInletOutletVelocityFvPatchVectorField::rmap
const labelList& addr
)
{
directionMixedFvPatchVectorField::rmap(ptf, addr);
mixedFvPatchVectorField::rmap(ptf, addr);
if (tangentialVelocity_.size())
{
@ -170,24 +175,66 @@ void Foam::pressureInletOutletVelocityFvPatchVectorField::updateCoeffs()
return;
}
const surfaceScalarField& phi =
db().lookupObject<surfaceScalarField>(phiName_);
const fvsPatchField<scalar>& phip =
patch().lookupPatchField<surfaceScalarField, scalar>(phiName_);
patch().patchField<surfaceScalarField, scalar>(phi);
valueFraction() = neg(phip)*(I - sqr(patch().nf()));
vectorField n(patch().nf());
const Field<scalar>& magSf = patch().magSf();
directionMixedFvPatchVectorField::updateCoeffs();
directionMixedFvPatchVectorField::evaluate();
if (phi.dimensions() == dimVelocity*dimArea)
{
refValue() = n*phip/magSf;
}
else if (phi.dimensions() == dimDensity*dimVelocity*dimArea)
{
const fvPatchField<scalar>& rhop =
patch().lookupPatchField<volScalarField, scalar>(rhoName_);
refValue() = n*phip/(rhop*magSf);
}
else
{
FatalErrorIn
(
"pressureInletOutletVelocityFvPatchVectorField::"
"updateCoeffs()"
) << "dimensions of phi are not correct" << nl
<< " on patch " << this->patch().name()
<< " of field " << this->dimensionedInternalField().name()
<< " in file " << this->dimensionedInternalField().objectPath()
<< exit(FatalError);
}
if (tangentialVelocity_.size())
{
// Adjust the tangential velocity to conserve kinetic energy
// of the entrained fluid
// scalarField magSqrUt(magSqr(tangentialVelocity_));
// scalarField scale
// (
// max(sqrt((magSqrUt - magSqr(refValue()))/magSqrUt), scalar(0))
// );
// refValue() += scale*tangentialVelocity_;
refValue() += tangentialVelocity_;
}
valueFraction() = 1.0 - pos(phip);
mixedFvPatchVectorField::updateCoeffs();
}
void Foam::pressureInletOutletVelocityFvPatchVectorField::write
(
Ostream& os
)
const
) const
{
fvPatchVectorField::write(os);
writeEntryIfDifferent<word>(os, "phi", "phi", phiName_);
writeEntryIfDifferent<word>(os, "rho", "rho", rhoName_);
if (tangentialVelocity_.size())
{
tangentialVelocity_.writeEntry("tangentialVelocity", os);
@ -203,9 +250,7 @@ void Foam::pressureInletOutletVelocityFvPatchVectorField::operator=
const fvPatchField<vector>& pvf
)
{
tmp<vectorField> normalValue = transform(valueFraction(), refValue());
tmp<vectorField> transformGradValue = transform(I - valueFraction(), pvf);
fvPatchField<vector>::operator=(normalValue + transformGradValue);
fvPatchField<vector>::operator=(pvf);
}

65
src/finiteVolume/fields/fvPatchFields/derived/pressureInletOutletVelocity/pressureInletOutletVelocityFvPatchVectorField.H
View File

@ -2,7 +2,7 @@
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2011-2013 OpenFOAM Foundation
\\ / A nd | Copyright (C) 2013 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
@ -25,21 +25,21 @@ Class
Foam::pressureInletOutletVelocityFvPatchVectorField
Group
grpInletletBoundaryConditions grpOutletBoundaryConditions
grpInletBoundaryConditions grpOutletBoundaryConditions
Description
This velocity inlet/outlet boundary condition is applied to pressure
boundaries where the pressure is specified. A zero-gradient condition is
applied for outflow (as defined by the flux); for inflow, the velocity is
obtained from the patch-face normal component of the internal-cell value.
The tangential patch velocity can be optionally specified.
obtained from the patch-face normal component of the internal-cell value and
the tangential patch velocity can be optionally specified.
\heading Patch usage
\table
Property | Description | Required | Default value
phi | flux field name | no | phi
rho | density field name | no | rho
tangentialVelocity | tangential velocity field | no |
\endtable
@ -49,6 +49,7 @@ Description
{
type pressureInletOutletVelocity;
phi phi;
rho rho;
tangentialVelocity uniform (0 0 0);
value uniform 0;
}
@ -69,7 +70,7 @@ SourceFiles
#define pressureInletOutletVelocityFvPatchVectorField_H
#include "fvPatchFields.H"
#include "directionMixedFvPatchFields.H"
#include "mixedFvPatchFields.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
@ -77,18 +78,24 @@ namespace Foam
{
/*---------------------------------------------------------------------------*\
Class pressureInletOutletVelocityFvPatchVectorField Declaration
Class pressureInletOutletVelocityFvPatchVectorField Declaration
\*---------------------------------------------------------------------------*/
class pressureInletOutletVelocityFvPatchVectorField
:
public directionMixedFvPatchVectorField
public mixedFvPatchVectorField
{
// Private data
//- Flux field name
word phiName_;
//- Density field name
word rhoName_;
protected:
//- Optional tangential velocity component
vectorField tangentialVelocity_;
@ -108,16 +115,9 @@ public:
const DimensionedField<vector, volMesh>&
);
//- Construct from patch, internal field and dictionary
pressureInletOutletVelocityFvPatchVectorField
(
const fvPatch&,
const DimensionedField<vector, volMesh>&,
const dictionary&
);
//- Construct by mapping given
// pressureInletOutletVelocityFvPatchVectorField onto a new patch
// pressureInletOutletVelocityFvPatchVectorField
// onto a new patch
pressureInletOutletVelocityFvPatchVectorField
(
const pressureInletOutletVelocityFvPatchVectorField&,
@ -126,6 +126,14 @@ public:
const fvPatchFieldMapper&
);
//- Construct from patch, internal field and dictionary
pressureInletOutletVelocityFvPatchVectorField
(
const fvPatch&,
const DimensionedField<vector, volMesh>&,
const dictionary&
);
//- Construct as copy
pressureInletOutletVelocityFvPatchVectorField
(
@ -137,7 +145,10 @@ public:
{
return tmp<fvPatchVectorField>
(
new pressureInletOutletVelocityFvPatchVectorField(*this)
new pressureInletOutletVelocityFvPatchVectorField
(
*this
)
);
}
@ -156,7 +167,11 @@ public:
{
return tmp<fvPatchVectorField>
(
new pressureInletOutletVelocityFvPatchVectorField(*this, iF)
new pressureInletOutletVelocityFvPatchVectorField
(
*this,
iF
)
);
}
@ -177,6 +192,18 @@ public:
return phiName_;
}
//- Return the name of rho
const word& rhoName() const
{
return rhoName_;
}
//- Return reference to the name of rho to allow adjustment
word& rhoName()
{
return rhoName_;
}
//- Return the tangential velocity
const vectorField& tangentialVelocity() const
{

35
src/finiteVolume/fields/fvPatchFields/derived/rotatingPressureInletOutletVelocity/rotatingPressureInletOutletVelocityFvPatchVectorField.C
View File

@ -2,7 +2,7 @@
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2011 OpenFOAM Foundation
\\ / A nd | Copyright (C) 2011-2013 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
@ -37,13 +37,11 @@ calcTangentialVelocity()
vector om = omega_->value(t);
vector axisHat = om/mag(om);
const vectorField tangentialVelocity
(
(-om) ^ (patch().Cf() - axisHat*(axisHat & patch().Cf()))
);
tangentialVelocity_ =
(-om) ^ (patch().Cf() - axisHat*(axisHat & patch().Cf()));
const vectorField n(patch().nf());
refValue() = tangentialVelocity - n*(n & tangentialVelocity);
tangentialVelocity_ -= n*(n & tangentialVelocity_);
}
@ -87,9 +85,7 @@ rotatingPressureInletOutletVelocityFvPatchVectorField
:
pressureInletOutletVelocityFvPatchVectorField(p, iF, dict),
omega_(DataEntry<vector>::New("omega", dict))
{
calcTangentialVelocity();
}
{}
Foam::rotatingPressureInletOutletVelocityFvPatchVectorField::
@ -100,9 +96,7 @@ rotatingPressureInletOutletVelocityFvPatchVectorField
:
pressureInletOutletVelocityFvPatchVectorField(rppvf),
omega_(rppvf.omega_().clone().ptr())
{
calcTangentialVelocity();
}
{}
Foam::rotatingPressureInletOutletVelocityFvPatchVectorField::
@ -114,13 +108,24 @@ rotatingPressureInletOutletVelocityFvPatchVectorField
:
pressureInletOutletVelocityFvPatchVectorField(rppvf, iF),
omega_(rppvf.omega_().clone().ptr())
{
calcTangentialVelocity();
}
{}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
void Foam::rotatingPressureInletOutletVelocityFvPatchVectorField::updateCoeffs()
{
if (updated())
{
return;
}
calcTangentialVelocity();
pressureInletOutletVelocityFvPatchVectorField::updateCoeffs();
}
void Foam::rotatingPressureInletOutletVelocityFvPatchVectorField::write
(
Ostream& os

9
src/finiteVolume/fields/fvPatchFields/derived/rotatingPressureInletOutletVelocity/rotatingPressureInletOutletVelocityFvPatchVectorField.H
View File

@ -2,7 +2,7 @@
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2011-2012 OpenFOAM Foundation
\\ / A nd | Copyright (C) 2011-2013 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
@ -39,7 +39,7 @@ Description
Property | Description | Required | Default value
phi | flux field name | no | phi
tangentialVelocity | tangential velocity field | no |
omega | angular velocty of the frame [rad/s] | yes |
omega | angular velocty of the frame [rad/s] | yes |
\endtable
Example of the boundary condition specification:
@ -49,7 +49,7 @@ Description
type rotatingPressureInletOutletVelocity;
phi phi;
tangentialVelocity uniform (0 0 0);
omega 100;
omega 100;
}
\endverbatim
@ -177,6 +177,9 @@ public:
// Member functions
//- Update the coefficients associated with the patch field
virtual void updateCoeffs();
//- Write
virtual void write(Ostream&) const;
};