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Zigainer May 16, 2012 05:32

Grid check failed .... run simulation useless?

I was just windering, if the grid check fails (in my case due to face handedness (left-handed cells but no negative volume)) any simulation is useless?
So without a passed grid check it's not worth to start a simulation?
I anyway get convergence with the first iteration and I think it is the grid quality, but I am not sure.
Am I right?

prince_pahariaa May 16, 2012 07:10

Yeah you are right..

Grid check should not fail in gambit
Check the area where you are observing face handedness problem.
Change the grid

foamcfd May 17, 2012 04:31

Do you mean that you are having the divergence right from first iteration? Are you using grid interfaces (non conformal mesh)? If so then I wouldn't worry too much for fewer left handed cells. If not then it should be fixed. However before concluding left handed faces for the divergence, I would have one more look in my case set up.

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