|
[Sponsors] |
June 23, 2008, 10:52 |
Updating dynamic mesh
|
#1 |
Guest
Posts: n/a
|
I have a deforming boundary wall whose motion is set by a UDF and find that for transient simulations the motion of this boundary wall is only updated after each timestep. Is there a way to let Fluent update the dynamic mesh motion (in my case a deforming boundary and mesh smoothing) after each (few) iterations?
I tried the execute command 'solve/mesh-motion' which works fine but automatically proceeds to the next timestep. Maybe I can go back a timestep next or is there maybe another way to do the trick? Kind regards |
|
June 23, 2008, 14:42 |
Re: Updating dynamic mesh
|
#2 |
Guest
Posts: n/a
|
reduce the time step size. Iterations are to solve the flow field for that timestep so reduce time step and associated number of iterations per time step.
|
|
June 24, 2008, 02:37 |
Re: Updating dynamic mesh
|
#3 |
Guest
Posts: n/a
|
As my wall motion depends on the fluid solution I would very much like to solve them simultaneously. As I have to underrelax the wall motion very much to get stability, a smaller timestep would yield an unphysical lag between the fluid pressure and the wall motion which can be circumvented by solving both simultaneously.
Any tips, tricks, ideas? |
|
July 11, 2008, 19:52 |
Re: Updating dynamic mesh
|
#4 |
Guest
Posts: n/a
|
i want to knwo every thing about dynamic mesh
|
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
failure in dynamic mesh updating | Fabrice | FLUENT | 2 | June 12, 2006 04:57 |
dynamic mesh - structured or cooper mesh | Manoj Kumar | FLUENT | 2 | November 11, 2005 01:18 |
updating dynamic mesh | greg | FLUENT | 1 | April 27, 2005 14:51 |
updating the mesh of a definition/result file | Bony Quach | CFX | 3 | June 26, 2003 04:17 |
updating file | jack | CFX | 2 | December 2, 2002 08:02 |