51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
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if (mesh.moving())
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{
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// The ddt term constructed by hand because it must be Euler
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const scalar dt = runTime.deltaT().value();
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const scalarField& V = mesh.V().field();
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const scalarField& V0 = mesh.V0().field();
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scalar sumV = gSum(V);
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scalarField volChange = (1.0 - V0/V)/dt;
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scalarField divFlux =
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- fvc::div(mesh.phi())().internalField();
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scalarField conserve = volChange + divFlux;
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scalar sumLocalContErr = dt*gSum(mag(conserve*mesh.V()))/sumV;
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scalar globalContErr = dt*gSum(conserve*mesh.V())/sumV;
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label nMotionErrors = 0;
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scalar maxMotionError = 0;
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forAll (conserve, cellI)
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{
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maxMotionError = Foam::max(maxMotionError, mag(conserve[cellI]));
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if (mag(conserve[cellI]) > 1e-8)
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{
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Info<< "Motion conservation error in cell " << cellI << ": "
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<< conserve[cellI]
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<< " V: " << V[cellI] << " V0: " << V0[cellI]
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<< " volume change: " << volChange[cellI]
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<< " div flux: " << divFlux[cellI] << endl;
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nMotionErrors++;
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}
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}
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if (nMotionErrors > 0)
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{
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Info<< "Number of motion errors: " << nMotionErrors
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<< " out of nCells = " << mesh.nCells() << endl;
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}
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Info<< "volume continuity errors : "
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<< "volume = " << sumV
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<< ", max error = " << maxMotionError
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<< ", sum local = " << sumLocalContErr
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<< ", global = " << globalContErr << endl;
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}
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