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Dynamic meshing of impeller using fluent

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Old   September 17, 2011, 21:51
Default Dynamic meshing of impeller using fluent
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Could any body tell me how can I do dynamic meshing for a stirred tank (membrane bio-reactor) ?!!!! I Really need a tutorial urgently and I can't fine any!

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Old   September 18, 2011, 04:42
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you don't need to use the dynamics meshing for such type of simulation. use sliding mesh or MRF algorithm
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Old   September 19, 2011, 20:46
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Quote:
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you don't need to use the dynamics meshing for such type of simulation. use sliding mesh or MRF algorithm
so how can I apply the sliding mesh in fluent? have you got any tutorial please?!! urgently!!!

I've got a tutorial which tells that I need to download sliding mesh c file and extract it in the working directory, and I did that however I don't know what to do after that...!!! because am simulating a stirred tank with impeller inside. I've done everything in gambit however I can't define the moving parts in Fluent!

Please Help
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Old   September 22, 2011, 15:08
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no need of c file as per my knowledge. please past pics of your problem
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Old   September 22, 2011, 16:43
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no need of c file as per my knowledge. please past pics of your problem
I hope this is clear enough, the problem now is that I don't know what shall I define the impeller as (boundary condition) in Gambit? as well as in Fluent?

notice that the impeller is working (rotates) only during the mixing process where is no air is provided by the membranes inside, so the question is shall I define the membranes in this stage as walls or porous zones?!

waiting for reply and feel free for any inquires.. thanks
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Old   September 22, 2011, 16:50
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This is very much clear that in the frozen rotor or sliding mesh algorithm we would be providing no slip wall for the impeller. The boundary condition specifying the rotation, goes to the fluid as opposed to the dynamic meshing
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Old   September 22, 2011, 16:56
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This is very much clear that in the frozen rotor or sliding mesh algorithm we would be providing no slip wall for the impeller. The boundary condition specifying the rotation, goes to the fluid as opposed to the dynamic meshing
can you clarify a bit more?!
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