Hi Shan,
Certainly with continuous Galerkin method you can avoid the checker boarding effect by using a Taylor Hood element where the pressure space is one order lower than the velocity space. I think there is an example of how to set this up in the user-guide.
We tend to use this combination at higher Re numbers where we do otherwise observe problems.
For DG spaces I think you might need to use a P - (P-2) space where the pressure is two orders lower than the velocity.
Cheers,
Spencer.
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Dear all:
When the continuous or discontinuous Galerkin method is used to solve the incompressible N-S equation, can the
“checkerboarding” of the pressure field be avoided if the LBB (or inf-sup) condition
is satisfied?
Can anyone help me? Thank you very much.
Best regards,
Shan
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