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A problem in simulating helium gas jet into ambient air

Posted Dec 9, 2010, 8:54 a.m. EST Fluid & Heat, Computational Fluid Dynamics (CFD), Chemical Reaction Engineering, Studies & Solvers Version 4.0a 2 Replies

Jia Li
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Hello, everyone.

I wanna to simulate that how the helium gas jet enters into the ambient air and after several weeks' learning of COMSOL 4.0a, I complete the model as shown in the attached figure.

Basically speaking, this model is coupled with 2 modules, transport of diluted species and single-phase flow--laminar flow. The bulk material is set to be air. These two modules have been coupled by setting the fluid velocity.

However, after calculation, I can get nothing but an error showing that 'can't get a solution' even though I have tried lots of times. I am not sure the boundary setting is right or not, therefore, I put it here and hope that anyone who knows how to solve this problem could help me.


Thanks a lot in advance.

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2 Replies Last Post Dec 9, 2010, 9:51 p.m. EST
Mohamed Aref
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Posted: 1 decade ago Dec 9, 2010, 5:25 p.m. EST
Hi

I'm a beginner in comsol
and my graduation project is in ultrasonic flow meter, and i want you if you can to aid me with good tutorials
Thanks,
Hi I'm a beginner in comsol and my graduation project is in ultrasonic flow meter, and i want you if you can to aid me with good tutorials Thanks,
Jia Li
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Posted: 1 decade ago Dec 9, 2010, 9:51 p.m. EST
actually, I have searched lots of time and can't find any useful information. So, I resort to this forum. and of course, I will supply any tutorial which may be useful for you.
actually, I have searched lots of time and can't find any useful information. So, I resort to this forum. and of course, I will supply any tutorial which may be useful for you.

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