30 lines
521 B
C
30 lines
521 B
C
// Solve the Momentum equation
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MRF.correctBoundaryVelocity(U);
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volTensorField gradU(fvc::grad(U));
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tmp<fvVectorMatrix> tUEqn
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(
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fvm::ddt(rho, U) + fvm::div(phi, U)
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+ MRF.DDt(rho, U)
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+ (
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- fvc::div(diff.mu()*Foam::dev2(Foam::T(gradU)))
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- fvm::laplacian(diff.mu(), U)
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)
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==
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fvOptions(rho, U)
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);
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fvVectorMatrix& UEqn = tUEqn.ref();
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UEqn.relax();
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fvOptions.constrain(UEqn);
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if (pimple.momentumPredictor())
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{
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solve(UEqn == -fvc::grad(p));
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fvOptions.correct(U);
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K = 0.5*magSqr(U);
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}
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