It is harder and it takes longer to provide support without full details.To speed up the process and quickly solve your issues this is a reminder to post as much information as you possibly can:
A description of the project and what you are trying to achieve
I am modeling a simple heating block
rectangle, 100mmx500mmx25mm - 3 10mm holes
An description of what is happening, screenshots or error logs are helpful
I select the interior hole face as my heat boundry of 350F, this is where the cartridge heaters will be placed
I set the exterior faces as a Convective heat flux and set it to 70F
If I want to model the “warm-up” period of the heater block, what should I set the Convective Heat Flux parameter to?