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Simple 2D Flow Problem but no convergence

Posted Jan 21, 2016, 5:41 p.m. EST Fluid & Heat, Computational Fluid Dynamics (CFD) 1 Reply

Cevat Akin
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Hi All,

I am trying to simulate very simple fluid flow with an inlet and outlet boundary conditions but I am having trouble with convergence. For some reason, my result would not converge. I was wondering if any of the experts could have a take a look at the model I have and help me with it.

I have an air flow inlet with a specified air flow speed and an outlet. The rest of the geometry is wall.

Please share your thoughts.

thanks,

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1 Reply Last Post Jan 22, 2016, 3:09 a.m. EST
Dara Bayat
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Posted: 8 years ago Jan 22, 2016, 3:09 a.m. EST
Hello

Actually it’s not a very simple geometry :-)

I tried to reduce the inlet speed and changed a bit the solver configuration.
If you run the simulation you can see that the circles in your model and its curvature create wakes that destabilize the flow.

I think you should use the turbulent flow module in this case (which I don’t have)

Good luck

Dara
Hello Actually it’s not a very simple geometry :-) I tried to reduce the inlet speed and changed a bit the solver configuration. If you run the simulation you can see that the circles in your model and its curvature create wakes that destabilize the flow. I think you should use the turbulent flow module in this case (which I don’t have) Good luck Dara

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