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Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

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convergence problem with a 2D T junction air channel

Posted 2012年7月18日 GMT-4 07:39 Fluid & Heat, Computational Fluid Dynamics (CFD) Version 4.2a 2 Replies

Binjie Dong
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Hi,
I tried to simulate a T junction air channel, the intention was to check the venturi effect. but I got problem for the convergence. I tried to change the mesh, add the point pressure contraint, etc. problem is still there.

Could anyone help me on that? Thank you in advance!

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2 Replies Last Post 2012年8月1日 GMT-4 07:19
Tero Hietanen
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Posted: 1 decade ago 2012年7月18日 GMT-4 16:07
Hi,

Change flow type from laminar to turbulent. Air inlet at speed 5 m/s gives Reynols value of 94000 and that is for sure turbulent flow.

Best regards

Tero
Hi, Change flow type from laminar to turbulent. Air inlet at speed 5 m/s gives Reynols value of 94000 and that is for sure turbulent flow. Best regards Tero
Binjie Dong
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Posted: 1 decade ago 2012年8月1日 GMT-4 07:19
Thank you for the reply. I will try it. sorry for the delayed reply, I was in travelling.
Thank you for the reply. I will try it. sorry for the delayed reply, I was in travelling.

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