Particle momentum source

alvio

Hi, I am trying to use one Particle momentum source giving as example. The fortran file is actually on the examples folder of the CFX root folder and it is named pt_mom_source.F and just calculates the drag force using Shiller Naumann expression. I did configurate it as explained on the help but I am unable to run it because it complains of error in the results units:

Error processing functions. Error in return units for user function 'Forza'.

Where forza is the name I gave to the user function on the CFX PRE.

I have check many times and the units seems to be correct.

Does anyone knows what could be the problem?

Regards, Alvio