|October 7, 2009, 15:28||
Porosity field in Fluent
Join Date: Oct 2009
Posts: 1Rep Power: 0
I modelling flow trough a porous medium. A wrote a UDF with the Ergun equation. I tested this UDF, and it is working when the porosity is constant. But in my project I need define not a constatnt value of porosity, but a scalar field (with small fluctuations of the porosity in each direction). I can not use the DEFINE_INIT function, because in Fluent a porosity variable is not present. For the same reason, I can not use it in a UDF (the Porosity value from the Porous Zone tab). For this reason, I defined a UDS. I can initialize now the UDS with DEFINE_INIT and after initialization the porosity field is correct (I can see it in post-processor). But, when the calculations begin, the porosity field changes. What can be the reason? I will only define a porosity field, and this field should be constant in time. I would add that I defined a very small value of the UDS Diffusitivity too (when is 0, than the Fluent can not benign calculations). I use Fluent in version 6.2.16.
Can someone help me?
|ergun, porosity, udf|
|Thread||Thread Starter||Forum||Replies||Last Post|
|Two questions on Fluent UDF||Steven||Fluent UDF and Scheme Programming||4||September 20, 2013 16:30|
|Fluent connection with simulink by TCP/IP||Tanktruck||Fluent UDF and Scheme Programming||1||June 28, 2009 12:56|
|OpenFOAM vs. Fluent & CFX||marco||Main CFD Forum||81||March 31, 2009 14:22|
|how can I specify Porosity in fluent||Joka||FLUENT||6||August 23, 2002 22:34|
|Fluent equation error?!?||TOM||FLUENT||6||July 15, 2002 03:24|