CFD Online Discussion Forums

CFD Online Discussion Forums (
-   FLUENT (
-   -   Problem with stirred mixing tank (

aminem June 20, 2014 09:16

Problem with stirred mixing tank
5 Attachment(s)

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 10:29

Problem are solved :)

Sun June 20, 2014 10:31

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.

All times are GMT -4. The time now is 05:53.