CFD Online Discussion Forums

CFD Online Discussion Forums (
-   FLUENT (
-   -   UDF using data from postprocessing surface (

Cedric July 31, 2005 12:58

UDF using data from postprocessing surface

I'm trying to create a UDF where I need to get the pressure average from a post processing surface. How can I get this data? how can I get the cell index of the cells that my postprocessing surface crosses?

Many thanks


Joey August 1, 2005 04:21

Re: UDF using data from postprocessing surface
Could you discribe your case more detailedly? So, maybe I could give some useful information to you.

Cedric August 1, 2005 11:16

Re: UDF using data from postprocessing surface

I have a pressure outlet.I'm forcing this pressure outlet with a UDF (thanks to "DEFINE PROFILE"). The pressure at this outlet as to follow a certain equation: it has to be the same than the pressure on a certain point that is in the middle of my computation domain. I have defined this point in surface>point in Fluent. What i need to do is to get the pressure at the cell where this point is situated and to use it in my pressure outlet UDF. I know that the fonction C_P(c,t) can give you the pressure if you know the cell index "c" and the thread "t". So, what I think is that if I have the cell index, then, I should have solved my problem. Can you help me on this?

many thanks cedric

All times are GMT -4. The time now is 08:15.