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-   -   Feedback from moving mesh (http://www.cfd-online.com/Forums/cfx/20841-feedback-moving-mesh.html)

Chien December 5, 2004 10:43

Feedback from moving mesh
 
Hi, Anyone know of the feedback problem you might expect in a moving mesh simulation? In particular, i would like to know how and what is causing it to occur. any help is appreciated.

ce

Rui December 5, 2004 13:55

Re: Feedback from moving mesh
 
What feedback problem ?

Chien December 5, 2004 14:11

Re: Feedback from moving mesh
 
As in when mesh is moved through displacement of the boundary, the fluctuation in flow field leads to convergence problem.

My domain has a boundary modelled as a free surface. The free surface is defined using the local pressure field. The change in shape of the free surface subsequently leads to change in local flow field.

I came over the "feedback" term in another CFX forum. Not sure if this term can correctly describe the problem I have. Just thought i ask..

Again, thanks for replying..



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