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Helmholtz with Flow Tutorial Not working at Higher Mach Numbers

Posted 06.05.2021, 09:57 GMT-4 Acoustics & Vibrations, Computational Fluid Dynamics (CFD) Version 5.5 0 Replies

Paolo Olson
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Hi,

I have edited the Helmholtz with Flow Tutorial geometry and used the L-Vel fluids model rather than SST. I would like to model Mach=0.3 flow, but I get the error:

There are 11923 degrees of freedom giving NaN/Inf in the vector for the variable comp1.uPlus. at coordinates: (0.265158,0.0136567,0.0745744), (0.265875,0.0149679,0.0745744)...

I have checked the boundary conditions, mesh and air properties as suggested in other threads, but I still get an error.

Any suggestions would be much appreciated.

Thanks

0 Replies Last Post 06.05.2021, 09:57 GMT-4
COMSOL Moderator

Hello Paolo Olson

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