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Solver problem - Multigrid sublevel has more degrees of freedom than top level

Posted May 15, 2018, 9:45 a.m. EDT Fluid & Heat, Computational Fluid Dynamics (CFD), Studies & Solvers Version 5.2 1 Reply

PY
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Hi,

When I run a computation for my model for laminar flow, comsol returns the error "multigrid sublevel has more degrees of freedom than top level". Does anyone know how I can fix this?

Maybe I should change into another type of iterative solver? ( I don't have any knowledge on what solver suits best for my model)

Or can anyone tell me which parameter to change in order to increase/decrease the degrees of freedom for multigrid level??

Thank you.

1 Reply Last Post May 22, 2018, 5:11 a.m. EDT
Yara Soares COMSOL Employee

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Posted: 7 years ago May 22, 2018, 5:11 a.m. EDT

Dear Pei Yi,

If you have a COMSOL Access Account please consider subitting your question to support@comsol.com for a swift reply.

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

Dear Pei Yi, If you have a COMSOL Access Account please consider subitting your question to support@comsol.com for a swift reply. 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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