CFD Online Discussion Forums

CFD Online Discussion Forums (
-   FLUENT (
-   -   Pressure and Temperature UDF for Cell Zone (

elixer2104 February 24, 2011 12:54

Pressure and Temperature UDF for Cell Zone
Hey Guys,

This is my first post on this forum and it seems like everyone is really knowledgable about Fluent, so I figured I would ask you guys for some help regarding UDFs in Fluent. I'm new to writing or using UDFs, so this is quite challenging for me. Anyways, here is what I have:

I am trying to obtain a velocity plot of a prechamber combustion spark plug. I have the average temperature and average pressure as a function of crank angle and I need to somehow link this to fluent.

So far I have been looking at the UDFs for profiles but this seems to only work on boundaries, not cell volumes. Is there a way to link/access the pressure/temperature data to the cell volumes (using UDS, DEFINE_SOURCE?), instead of faces? And is it possible to access the data directly instead of using an equation for the data (pointer?)? I have also been looking at the profiles button under the cell zones conditions and I found ways to set the temperature and the velocity profiles (fixed values?)but not the Pressure.

Anyways, any help would be much appreciated and thanks in advance!

Kevin, EIT

All times are GMT -4. The time now is 01:29.