Uncommon stirrer case simulation setup

fatal_error · July 17, 2015, 06:38

Hello,
I would like to ask you about the simulation strategy for a case I do. I have a cylindrical tank in which there is a kind of rotating stirrer which is elliptical. There are two problems with this case:

-Ellipse major axis length is close to the tanks diameter.
-The fluid region is all around the ellipse.

I don't want to use the immersed solid since I need temperature distribution in the ellipse. I am afraid that the mixing vessel case is not necessarily feasible in my simulation.
Thank you and regards

ghorrocks · July 17, 2015, 08:19

It would be pretty unusual to do a rotating machinery simulation with anything other than rotating frames of reference.

Your mesh appears to have very big jumps in element edge length. This may cause convergence problems.

fatal_error · July 19, 2015, 06:46

Thanks. I thought there may be other approaches, it would be interesting to compare different solutions.
Yes this mesh is a first draft, just to make sure the geometry and bc are correct.

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July 17, 2015, 08:19		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	It would be pretty unusual to do a rotating machinery simulation with anything other than rotating frames of reference. Your mesh appears to have very big jumps in element edge length. This may cause convergence problems.

July 19, 2015, 06:46		#3
fatal_error New Member Józef Join Date: Nov 2011 Posts: 2 Rep Power: 0	Thanks. I thought there may be other approaches, it would be interesting to compare different solutions. Yes this mesh is a first draft, just to make sure the geometry and bc are correct.