Hello all,

I have a theoretical question in regards to analysis of liquid cold plates. If I had a problem where I knew input power, flow rate, and fluid temperature, can I do a steady state thermal sim without CFD? Basically I am trying to figure out how to solve for heat transfer coefficient generated by forced convection so that I can solve for temperature at a number of different locations.

There typically is not a lot of temp change in the working fluid of a cold plate so you are unlikely to miss by much on the delta T with the assumption you mention. If you know the inlet and outlet temps of the fluid then I would use the average. If you know the thermal dissipation, assume it is all coming out the fluid, you know the flow rate and fluid properties then you can estimate the delta T of the cold plate fluid. While it has been awhile on the convection coefficient calc what you wrote sounds about right.