53af711c6a
- regular or forced assignment from `zero` does not need dimension
checking:
Old: U = dimensionedVector(U.dimensions(), Zero);
New: U = Zero;
this eliminates a fair bit of clutter and simplifies new coding
without losing general dimension checking capabilities.
125 lines
2.4 KiB
C
125 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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// Note: explicitly bypass evaluation of contraint patch overrides
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// (e.g. swirlFanVelocity might lookup phi,rho)
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//U = Zero;
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{
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U.internalFieldRef() = Zero;
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U.boundaryFieldRef() = Zero;
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}
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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::flux(U)
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);
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if (args.found("initialiseUBCs"))
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{
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U.correctBoundaryConditions();
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phi = fvc::flux(U);
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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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// Allow override from command-line -pName option
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const word pName = args.getOrDefault<word>("pName", "p");
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// Infer the pressure BCs from the velocity
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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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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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),
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mesh,
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dimensionedScalar(sqr(dimVelocity), Zero),
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pBCTypes
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);
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// Infer the velocity potential BCs from the pressure
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wordList PhiBCTypes
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(
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p.boundaryField().size(),
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zeroGradientFvPatchScalarField::typeName
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);
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forAll(p.boundaryField(), patchi)
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{
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if (p.boundaryField()[patchi].fixesValue())
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{
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PhiBCTypes[patchi] = fixedValueFvPatchScalarField::typeName;
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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(dimLength*dimVelocity, Zero),
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PhiBCTypes
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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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#include "createMRF.H"
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