Moving mesh

signofra · April 10, 2010, 05:19

Hello to everyone!
I'm trying to simulate a simple rectangle moving by fluid force. I have a inlet velocity of 1 mm/s on x axis direction. I'd like to calculate the Drag Force and to see the streamlines. I've attached a picture with the CEL expression. When I run the solver and then the post I can see a strange behaviour. The rectangle has an oscillating movement around its start position!!!it's naturally impossible. What am I doing wrong?

The second stage is to simulate a rotating rectangle around its bottom face. How can I simulate the rotation with CEL?

ghorrocks · April 10, 2010, 06:31

In CFX V12 you have two approaches to model this - moving mesh or immersed body. The immersed body option is by far the easiest. CFX support has done demo files doing this sort of thing using both approaches, so talk to CFX support and get the demo files.

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April 10, 2010, 06:31		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,701 Rep Power: 143	In CFX V12 you have two approaches to model this - moving mesh or immersed body. The immersed body option is by far the easiest. CFX support has done demo files doing this sort of thing using both approaches, so talk to CFX support and get the demo files.