[ghost82]

Hi all,
I have a problem with a udf (I'm not very expert).

Problem: 2D problem with 2 fluids and one solid, as in the attached picture.
Only energy is solved, no motion.
Problem is transient: total time 7200 seconds, time step: 1 second

I want to patch water at each time step with a temperature which is function of time (linear function, from 5 ˚C at time 0 s to 8 ˚C at time 7200 s).

I think I should go with the DEFINE_ADJUST macro but I don't know how to assign temperature to water domain.

Any help is appreciated.

Thank you,

Daniele