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How does COMSOL avoid Checkerboard solutions?

Posted Aug 23, 2012, 4:00 a.m. EDT Computational Fluid Dynamics (CFD) Version 4.3 0 Replies

Kennet Olesen
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Hi

I am a Master student, which have started to use COMSOL for my Master Thesis. I am wondering how COMSOL avoid checkerboard solutions of the pressure field, when it solves the Navier Stokes equation. I can see that the default mesh is set to P1-P1, which when using the Galerkin method can give spurios solutions like the checkerboard solution, right?
I first thought that this was avoided with consistent stabilization, but as I understand it after reading the section in the reference guide this only deals with the advection-diffusion part of the velocity field, right?

I hope someone can guide me the right way toward an answer.

Thanks

Best regards
Kennet
0 Replies Last Post Aug 23, 2012, 4:00 a.m. EDT
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Hello Kennet Olesen

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