Elmer Discussion Forum

That's an interesting work around. I need to think about that more.Seems like one would want to make the hypothetical gas very dense and with a very high specific heat. So far I evolve your idea into tricking it by adding another layer of a solid that has properties of hc and T infinity rather than ...

My model is related to an industrial oven. There isn't a radiative component to it. Its all conduction with a convective BC. Thank you for the reference to the Mcguirre post. That post moves around a bit but in the end it appears to be a computed convection problem involving an N-S solver. I'm just ...

Thanks for sharing the code!

Hi Rich B: I have a flat plate that is in an oven. I know the gas temperatures inside the oven and they are given as a function time in the boundary condition 1 listing. I also have temperature sensors on the plate that are separated from the oven temperature by some process aids. Since the gas temp...

Thanks for investigating and providing your comprehensive assessment!

You are WONDERFUL! I'll continue to struggle as well, but believe I am at the end of my rope.

Responding to your most recent response where you did your own evaluation, you are solving a different problem that what I need to address. I need to work with specific time dependent experimental data as boundary conditions. You are correct that the heat equation does not respond as fast as the wav...

I'm trying to do a conduction solution with convective BCs that does not involve CFD - not a conjugate HT problem. I tried External Temperature = Variable Time before with no success, but repeated today in case I had done something wrong. See pertinent section listed below: Initial Condition 1 Name ...

Good to know. Thank you for the lesson Yes h is the Heat Transfer Coefficient. Is there another way to accomplish what I am trying to do? I've tried a Convective Heat Transfer Coefficient with a time dependent External Temperature and not had success The Elmer Manual says: Both variables α and Text ...

I removed the R comments and replaced with !. The # was not a good idea. I changed from 3 to 2 solvers. I need the 2nd solver for Save Scalars. Obsolete Elmerpost is ok for this simple problem. Unfortunately all those excellent catches did not resolve the problem. I get the same result if I use h=0....