|September 22, 2006, 09:45||
udf to set vel. = 0 at a grid point or a cell
Is there a way, to set the velocity = 0 at a grid point or a cell?? Like having a wall there, but without actually modeling the wall.
I have a complex geometry, with many possible variations. Now, I don't want to model the geometry every time, that would be a hell lot of work. I want to use a udf that defines me a wall at the point in the volume, where my solid is.
I will read all grid points with an external programm, calculate the value for that point (eg. 1 = solid, 0 = fluid) and read the values back into fluent. Now, where is the udf command, that sets the velocity = 0 at the points with value 1 ????
I know, that will not represent the flow correctly - the wall will not have the exact shape of the real wall. But the simulation doesn't has to be so accurate, because it is a rough estimate, what happens in the volume.
PS.: I tried with a very high value for the interial resistance (porouse zone) but that didn't work out well
|Thread||Thread Starter||Forum||Replies||Last Post|
|set fvMatrix coefficients equal to those of another cell||akimbrell||OpenFOAM Programming & Development||3||August 8, 2011 08:32|
|interchanging face information with cell information/ radiation flux UDF||ximik||FLUENT||1||May 4, 2011 16:34|
|How to Reference an Adjacent Cell in a UDF ?||jeff8541||FLUENT||0||March 8, 2011 11:33|
|How to set a cell or face property independent of BC||TDi||Fluent UDF and Scheme Programming||1||October 19, 2010 19:59|
|Grid Independent Solution||Chuck Leakeas||Main CFD Forum||2||May 26, 2000 11:18|