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Element order and mesh resolution
Posted 19 déc. 2017, 06:38 UTC−5 Fluid & Heat, Computational Fluid Dynamics (CFD), Mesh Version 5.3 1 Reply
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The default discretization of fluids (incompressible Navier-Stokes laminar flow) is P1+P1. I often read that P2+P1 should better be used instead of P1+P1 in order to get better accuracy. Instead of increasing the mesh element order one could also refine the mesh to get better accuracy of course. My question is: is there a rule of thumb on what is the preferred option; increasing the mesh element order from P1+P1 to P2+P1 or refining the mesh and keeping the mesh elements to P1+P1? Or are there any considerations to keep in mind when making such a choice?
Leon Kamp
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Dear leon,
I would like to suggest that you ask your question directly to support@comsol.com for a quicker answer.
Met vriendelijke groet, Best regards,
Yara Soares
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