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-   -   periodic boundary condition in taylor-coutte flow (http://www.cfd-online.com/Forums/fluent/46640-periodic-boundary-condition-taylor-coutte-flow.html)

jaysree November 21, 2007 07:38

periodic boundary condition in taylor-coutte flow
 
Greetings to everybody. I work on 2D cfd simulation of taylor coutte flow using Fluent vs-6. In my problem, the outer cylinder is staionary and inner is rotating.Can anybody help me how to give rotational velocity to the inner cylinder while defining boundary condition in fluent. I define inner cylinder as periodic but could not give a specific value to the rotational velocity.

Thanks for your kind help. Jaysree


liz1 November 24, 2007 00:25

Re: periodic boundary condition in taylor-coutte f
 
Try to defined the problem as 2D axisymmetric instead of periodic.

jaysree November 26, 2007 04:33

Re: periodic boundary condition in taylor-coutte f
 
Thankyou very much for ur help. But whenever I am using 2D-axisymmetric model it is the following error- divergence detected in AMG solver: x-momentum

What to do further? Any idea please.


raj November 27, 2007 17:53

Re: periodic boundary condition in taylor-coutte f
 
Change BC if possible... play with ur initial conditions...and solver...if using turbulence, then try to change the default values to min then increase gradualy to max to get convergence...

Gud Luck


Ramesh.K December 3, 2007 04:00

Re: periodic boundary condition in taylor-coutte f
 
Hi,

u can try for a 3d case more easily than struggling for a 2d case for this simple geometry



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