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-   -   Multiple frame reference in stirred tank reacto (http://www.cfd-online.com/Forums/fluent/37189-multiple-frame-reference-stirred-tank-reacto.html)

Jane July 7, 2005 08:40

Multiple frame reference in stirred tank reacto
 
How do i specify my boundary conditions in GAMBIT when i am intending to use MFR in FLUENT?

I had to two blocks(inner & outer). The inner contains the impeller & shaft and it is rotating one while the outer is the stationary which contains the baffles. I specifed my blades & shaft as moving wall with relative velocity adjacent to zone as zero. There is an interface which i created but my solution is not converging. I guess it is my boundary conditions or creation of the outer or inner blocks.

I need help.

galeazzo July 7, 2005 10:29

Re: Multiple frame reference in stirred tank react
 
There are two points you can check:

Is your grid ok after you set the interfaces? You can check this with the command grid -> check.

The MRF is more suitable to problems with small rotor/stator interaction. You can try to use sliding mesh if your interaction is strong.

Good luck

galeazzo

Jane July 8, 2005 04:57

Re: Multiple frame reference in stirred tank react
 
Thanks. My tank height is about 300mm. Can you advise me on how i can restructure my grid. How do i create this interface?

Expecting

galeazzo July 11, 2005 15:22

Re: Multiple frame reference in stirred tank react
 
There is a Fluent tutorial on how to set a sliding mesh problem. If you have access to the www.fluentusers.com, the URL is http://learningcfd.com/login/fluent/...iding-mesh.pdf

If not, I can send you the file via email.

I think it is enough to you to set your problem properly.

galeazzo

lalitupadhayay June 1, 2010 15:47

tutorial on multi frame reference
 
Please send me the tutorial on MRF at my mail lalitupadhayay@rediffmail.com. i will be very grateful to you..
Regards


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