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Updates on behaviour of limiters. Oliver Borm.

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This commit is contained in:
Hrvoje Jasak 2011-01-20 00:48:55 +00:00
parent f68dee507a
commit b59b86bd1e
5 changed files with 21 additions and 7 deletions
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9
src/finiteVolume/interpolation/surfaceInterpolation/limitedSchemes/LimitedScheme/NVDTVD.H
View file

@ -113,9 +113,14 @@ public:
}
// Stabilise for division
gradf = stabilise(gradf, VSMALL);
// Changed to SMALL to prevent FPE. OB, 14/Jan/2011
gradf = stabilise(gradf, SMALL);
return 2*(gradcf/gradf) - 1;
// New formulation. Oliver Borm and Aleks Jemcov
// HJ, 13/Jan/2011
return max(2*(gradcf/gradf) - 1, 0);
// return 2*(gradcf/gradf) - 1;
}
};

9
src/finiteVolume/interpolation/surfaceInterpolation/limitedSchemes/LimitedScheme/NVDVTVDV.H
View file

@ -114,9 +114,14 @@ public:
}
// Stabilise for division
gradf = stabilise(gradf, VSMALL);
//Changed to SMALL to prevent FPE. OB, 14/Jan/2011
gradf = stabilise(gradf, SMALL);
return 2*(gradcf/gradf) - 1;
// New formulation. Oliver Borm and Aleks Jemcov
// HJ, 13/Jan/2011
return max(2*(gradcf/gradf) - 1, 0);
// return 2*(gradcf/gradf) - 1;
}
};

2
src/finiteVolume/interpolation/surfaceInterpolation/limitedSchemes/upwind/upwind.H
View file

@ -121,7 +121,7 @@ public:
this->mesh()
),
this->mesh(),
dimensionedScalar("upwindLimiter", dimless, 0.0)
dimless
)
);
}

6
src/finiteVolume/interpolation/surfaceInterpolation/limitedSchemes/vanAlbada/vanAlbada.H
View file

@ -78,7 +78,11 @@ public:
faceFlux, phiP, phiN, gradcP, gradcN, d
);
return r*(r + 1)/(sqr(r) + 1);
// New formulation. Oliver Borm and Aleks Jemcov
// HJ, 13/Jan/2011
return (r + 1)/(r + 1/stabilise(r, VSMALL));
// return r*(r + 1)/(sqr(r) + 1);
}
};