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aminem June 20, 2014 10:16

Problem with stirred mixing tank
 
5 Attachment(s)
Hi

You can see in attached picture that I have a probleme with water velocity

Can anyone help me de resolve this problem ?

I used MRF and k-e RNG approach
W= 100 rpm
material: water
solver: SIMPLE
Meshing : non conformal patch (see picture)

aminem June 20, 2014 11:29

Problem are solved :)

Sun June 20, 2014 11:31

Hi,
A few suggestions:
try k-e standard, slice your geometry at the bottom part, I believe you can get hex elements for the Rushton blades and try different dimensions for the rotational zones

And a couple of questions:
What component of the velocity is the first contour?
Could you please attach the contour plot of axial velocity in a vertical plane (xy in your geometry)
Please include the number of cells and the mesh quality in your reply.
Overall, I think the mesh is causing all the troubles. To me it looks kinda coarse, especially where the top rotational zone touches the rest of the tank.
Cheers!


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