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Element order and mesh resolution

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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


1 Reply Last Post 22.12.2017, 07:01 GMT-5
Yara Soares COMSOL Employee

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Posted: 7 years ago 22.12.2017, 07:01 GMT-5

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


COMSOL BV | Röntgenlaan 37 | 2719 DX Zoetermeer Phone: +31 (0)79 363 4230 | Fax: +31 (0)79 361 4212

www.comsol.nl | yara.soares@comsol.com

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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 -------------------------------------------------------------------------- COMSOL BV | Röntgenlaan 37 | 2719 DX Zoetermeer Phone: +31 (0)79 363 4230 | Fax: +31 (0)79 361 4212 www.comsol.nl | yara.soares@comsol.com ----------------------------------------------- Stay in touch with COMSOL in Social Media: ----------- Find a listing of COMSOL events for the winter at: www.comsol.nl/events

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