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Euler-Euler Model: reached singularity

Posted 25 févr. 2013, 19:33 UTC−5 Computational Fluid Dynamics (CFD), Studies & Solvers Version 4.2a 3 Replies

John McTernan
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I am running a Euler-Euler model and get a singularity error about six seconds into a 12 second analysis. It appears that there is a high velocity flair at an inlet when the singularity occurs. I have tried refining the mesh but the error returns. Any suggestions on how to relax convergence or to avoid this convergence issue? I am willing to accept some reduced accuracy in order to achieve convergence.
3 Replies Last Post 2 mars 2013, 16:49 UTC−5
John McTernan
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Posted: 1 decade ago 28 févr. 2013, 18:15 UTC−5
Could really use some help on this. Any suggestions for avoiding singularities?
Could really use some help on this. Any suggestions for avoiding singularities?
Nagi Elabbasi Facebook Reality Labs
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Posted: 1 decade ago 2 mars 2013, 00:04 UTC−5
Add inconsistent stabilization.
Add inconsistent stabilization.
John McTernan
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Posted: 1 decade ago 2 mars 2013, 16:49 UTC−5
Thanks Nagi; I will give it a try. It seems that I am getting my singularity because my dispersed phase fraction becomes greater than one. Do you think enabling isotropic diffusion for the dispersed phase transport will help?
Thanks Nagi; I will give it a try. It seems that I am getting my singularity because my dispersed phase fraction becomes greater than one. Do you think enabling isotropic diffusion for the dispersed phase transport will help?

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