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Non-orthogonality correction

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Old   December 2, 2013, 09:05
Default Non-orthogonality correction
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I am trying to understand how the correction mechanism for non-orthogonal diffusion terms works. Some aspects have been discussed in this forum, but rather unsatisfactorily I feel. After reading through Dr. Jasaks dissertation I understand that the terms are split into a dominant implicit part and a term k, which is treated as a source term. This setup is then somehow solved through iterating the solution in the PISO algorithm.

Within the OpenFOAM structure (using PIMPLE) I find two influential points towards the treatment of non-orthogonality:
- setting the relevant schemes to corrected/limited
- setting nNonOrthogonalCorrectors to >0

Now, what do these do? How do you use them and how do they work together?

Would be great if someone, with more insight than the rookie I am, could clarify that or link me to relevant documentation! Thank you!
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Old   December 13, 2013, 11:55
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Hi, both settings are complementary, the first one turns or not the corrections and the second one tells the number of corrections.

https://drive.google.com/file/d/0B2l...it?usp=sharing

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