- **OpenFOAM Running, Solving & CFD**
(*http://www.cfd-online.com/Forums/openfoam-solving/*)

- - **using non-orthogonal correction for the laplacian term**
(*http://www.cfd-online.com/Forums/openfoam-solving/83553-using-non-orthogonal-correction-laplacian-term.html*)

using non-orthogonal correction for the laplacian termDear all,
Hopefully one of you can help me with the following question: If one uses (in fvSchemes): laplacian(nu,U) Gauss linear corrected; which correction is referred to? minimum correction, orthogonal correction or over-relaxed? (as referred to in the thesis of Jasak) Thanks in advance. |

Hello,
I believe this is simply an orthogonal correction, used mainly for highly orthogonal grids (such as high aspect ratio anisotropic tets). |

Quote:
Ok, I understand this, I try to use it on polyhedral grids. But do you also know how this orthogonal correction is implemented? Jasak refers to three different possibilities (minimum correction, orthogonal correction or over-relaxed) which are all orthogonal corrections bu with different numerical behaviour. |

Until we've studied over-relaxed approach is what is implemented. Take a look of gaussLaplacianScheme.C lines 169-173, correctedSnGrad.C lines 56-108 and surfaceInterpolation.C lines 270-384.
Regards. |

Great references to the code lines Santiago!
It is very clear now to me. |

All times are GMT -4. The time now is 04:25. |