Global environment is set as external flow type,right?
No, it's set as internal, un-flagged "exclude cavities without flow condition" and "flagged heat conduction in solid".Re-running the solver somehow I was able to get the expected differential pressure (10psi), not sure what I changed to get the different result.
Now I have another problem.
The oil in the lasts few coils is loosing temperature, even if the external air temperature is much higher than the oil temperature.
How this is possible?