Is there any possibility to call a custom define function in the code of a UDF, instead of computing it in the Fluent window?

For instance, I would like to compute a surface integral, over a specific surface. I know how to make it in the Fluent window, but what if I want to compute it automatically after each time step for instance, and save the result in some file?

There must be a way to make it, huh?

Thanks!

this can be easily done by setting up a surface monitor,which is under the solve menu, and setting it to write the data to a file after each time step.

Ok, thanks, I'll try this!