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what does NonOrthogonalCorrectors mean?

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Old   February 10, 2014, 05:01
Question what does NonOrthogonalCorrectors mean?
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avinashjagdale
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hello,
How does openfoam treat non orthogonal meshes using "nonOrthogonalcorrectors" ?
What does it actually do?
Thank You.
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Old   February 10, 2014, 06:39
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Alexey Matveichev
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Hi,

You'd like to see a piece of code (this example is from pimpleFoam's pEqn.H)

Code:
// Non-orthogonal pressure corrector loop
while (pimple.correctNonOrthogonal())
{
    // Pressure corrector
    fvScalarMatrix pEqn
    (
        fvm::laplacian(rAU, p) == fvc::div(phiHbyA)
    );

    pEqn.setReference(pRefCell, pRefValue);

    pEqn.solve(mesh.solver(p.select(pimple.finalInnerIter())));

    if (pimple.finalNonOrthogonalIter())
    {
        phi = phiHbyA - pEqn.flux();
    }
}
or something else?
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Old   February 10, 2014, 07:00
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avinashjagdale
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hi alexey ,
I am new to OpenFOAM . I came across this while going through UserGuide.
Hence I won't understand much from the Code.
I have read about the calculation of diffusion and convection terms for non-ortho grids. Can u please give an explanation in non-code format?
Thank you.
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Old   February 10, 2014, 11:03
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Alexey Matveichev
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I can only suggest you reading H. Jasak's thesis - http://powerlab.fsb.hr/ped/kturbo/Op...jeJasakPhD.pdf
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Old   February 11, 2014, 00:17
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thank you.
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