Fluent UDF's / dynamic meshing errors
Good morning all
I am trying to model an aerofoil starting motion abrubtly. I have written a UDF which basically says if time < t1 then velocity = 0 else if time < t2 then velocity = x else velocity =0 so that should start off with nothing moving. The aerofoil should then move a short distance and then stop. The problem is, when I try to run the problem, I eventually get an error message. Sometimes this is 'Segmentation violation', sometimes 'Bus error'. I have a feeling that this is because the remeshing process cannot cope - sometimes the error is due to negative cell volumes. Can anyone give me a hint as to how I can solve these problems? Or if anyone can think of an easier way to model the problem, that too would be helpful. Thanks all, Peter |
Re: Fluent UDF's / dynamic meshing errors
I think I found the solution. Playing around with the dynamics mesh parameters - especially minimum and maximum cell volumes - and using very small time steps (~0.005s) seems to elimate the problem.
Peter |
Re: Fluent UDF's / dynamic meshing errors
I think you should apply for DEFINE_CG_MOTION ,The model might be useful for you
|
All times are GMT -4. The time now is 09:53. |