[houss]

Hello Foamers,

i am trying to simulate a very easy CHT-case including Alu-cover and a cooling pad. the cover is mounted over an alu-case housing a PCB which has MOSFETs mounted on it. Obviously these bad guys are pumping lot of heat (13W)

I am trying in a first run to only simulate the cover, the pad and the surrounding free air (see link attached plz/ Te cover geometry willbe changed later in order to grant more heat exit). Now after trying the set-up the case and getting it running it still break up very early. Following the solver progress i noticed that solving the h-equation for cover and air is taking a lot of time (too many iteratiosn up to 280) with very bad residual.
For this reason i am doubting i defined the BC in bad way.

I'd be grateful for any help guys :-)

I am using OF-v1612+.

https://1drv.ms/u/s!Av2DChjC-94wjqUNk8tP9VCMp6PD4g

Peace.
Houssam.