|July 14, 2012, 02:12||
compile a udf or interpret it?
Join Date: Jan 2010
Posts: 106Rep Power: 8
I am simulating bubble collapse near wall. when I assume compressible air inside the bubble and incompressible water, my simulation goes well and I get good results. But when I INTERPRET a udf for compressibility of water, I get divergence problems (like unrealistic low pressures).
Do you think interpreting the udf makes this problem? if I compile the udf, would it be solved?
What is the basic difference between interpreting and compiling a udf?
|July 14, 2012, 02:49||
Join Date: Jun 2012
Posts: 1,191Rep Power: 19
If there are no warning messages while solving the case with the interpreted UDF, then there should not be any difference when you compile the UDF instead.
In general, interpreted UDFs are the "quick and dirty" solution if the UDF doesn't contain complicated calculations.
There are some restrictions to interpreted UDFs concerning both the C-programming and the data read from the solver. Refer to the UDF manual for details.
A compiled UDF does not have these restrictions and runs much faster.
In your case, it is far more likely that the content of the UDF itself causes the instability of the solving process.
|Thread||Thread Starter||Forum||Replies||Last Post|
|ATTN ALL: SOLUTON TO UDF COMPILE PROBLEM||Rizwan||Fluent UDF and Scheme Programming||32||May 8, 2015 06:05|
|UDF interpret in Fluent||wanghaojie||Fluent UDF and Scheme Programming||1||February 3, 2012 15:51|
|udf compile in parallel system||tahereh||FLUENT||1||December 9, 2008 10:48|
|interpret or compile an UDF (emergency)||Lotfi||FLUENT||1||August 26, 2007 12:58|
|why results different for Compile and Interpret?||Joey||FLUENT||3||April 6, 2004 17:19|