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121 lines
2.4 KiB
C
121 lines
2.4 KiB
C
Info<< "Reading velocity field U\n" << endl;
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volVectorField U
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(
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IOobject
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(
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"U",
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runTime.timeName(),
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mesh,
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IOobject::MUST_READ,
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IOobject::AUTO_WRITE
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),
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mesh
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);
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// Initialise the velocity internal field to zero
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U = dimensionedVector("0", U.dimensions(), vector::zero);
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surfaceScalarField phi
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(
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IOobject
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(
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"phi",
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runTime.timeName(),
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mesh,
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IOobject::NO_READ,
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IOobject::AUTO_WRITE
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),
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fvc::interpolate(U) & mesh.Sf()
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);
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if (args.optionFound("initialiseUBCs"))
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{
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U.correctBoundaryConditions();
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phi = fvc::interpolate(U) & mesh.Sf();
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}
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// Construct a pressure field
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// If it is available read it otherwise construct from the velocity BCs
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// converting fixed-value BCs to zero-gradient and vice versa.
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word pName("p");
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// Update name of the pressure field from the command-line option
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args.optionReadIfPresent("pName", pName);
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// Infer the pressure BCs from the velocity BCs
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wordList pBCTypes
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(
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U.boundaryField().size(),
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fixedValueFvPatchScalarField::typeName
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);
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forAll(U.boundaryField(), patchi)
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{
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if (U.boundaryField()[patchi].fixesValue())
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{
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pBCTypes[patchi] = zeroGradientFvPatchScalarField::typeName;
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}
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}
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// Note that registerObject is false for the pressure field. The pressure
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// field in this solver doesn't have a physical value during the solution.
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// It shouldn't be looked up and used by sub models or boundary conditions.
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Info<< "Constructing pressure field " << pName << nl << endl;
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volScalarField p
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(
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IOobject
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(
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pName,
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runTime.timeName(),
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mesh,
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IOobject::READ_IF_PRESENT,
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IOobject::NO_WRITE,
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false
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),
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mesh,
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dimensionedScalar(pName, sqr(dimVelocity), 0),
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pBCTypes
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);
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label pRefCell = 0;
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scalar pRefValue = 0.0;
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if (args.optionFound("writep"))
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{
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setRefCell
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(
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p,
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potentialFlow.dict(),
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pRefCell,
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pRefValue
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);
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}
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Info<< "Constructing velocity potential field Phi\n" << endl;
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volScalarField Phi
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(
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IOobject
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(
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"Phi",
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runTime.timeName(),
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mesh,
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IOobject::READ_IF_PRESENT,
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IOobject::NO_WRITE
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),
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mesh,
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dimensionedScalar("Phi", dimLength*dimVelocity, 0),
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p.boundaryField().types()
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);
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label PhiRefCell = 0;
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scalar PhiRefValue = 0;
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setRefCell
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(
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Phi,
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potentialFlow.dict(),
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PhiRefCell,
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PhiRefValue
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);
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mesh.setFluxRequired(Phi.name());
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