Search found 24 matches
- 06 Feb 2023, 01:49
- Forum: General
- Topic: Temperature Dependent Convective BC for Conduction
- Replies: 25
- Views: 1545
Re: Temperature Dependent Convective BC for Conduction
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 ...
- 04 Feb 2023, 00:57
- Forum: General
- Topic: Temperature Dependent Convective BC for Conduction
- Replies: 25
- Views: 1545
Re: Temperature Dependent Convective BC for Conduction
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 ...
- 04 Feb 2023, 00:51
- Forum: General
- Topic: Temperature Dependent Convective BC for Conduction
- Replies: 25
- Views: 1545
Re: Temperature Dependent Convective BC for Conduction
Thanks for sharing the code!
- 03 Feb 2023, 21:19
- Forum: General
- Topic: Temperature Dependent Convective BC for Conduction
- Replies: 25
- Views: 1545
Re: Temperature Dependent Convective BC for Conduction
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...
- 03 Feb 2023, 20:39
- Forum: General
- Topic: Temperature Dependent Convective BC for Conduction
- Replies: 25
- Views: 1545
Re: Temperature Dependent Convective BC for Conduction
Thanks for investigating and providing your comprehensive assessment!
- 03 Feb 2023, 17:36
- Forum: General
- Topic: Temperature Dependent Convective BC for Conduction
- Replies: 25
- Views: 1545
Re: Temperature Dependent Convective BC for Conduction
You are WONDERFUL! I'll continue to struggle as well, but believe I am at the end of my rope.
- 03 Feb 2023, 17:34
- Forum: General
- Topic: Temperature Dependent Convective BC for Conduction
- Replies: 25
- Views: 1545
Re: Temperature Dependent Convective BC for Conduction
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...
- 03 Feb 2023, 17:23
- Forum: General
- Topic: Temperature Dependent Convective BC for Conduction
- Replies: 25
- Views: 1545
Re: Temperature Dependent Convective BC for Conduction
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 ...
- 03 Feb 2023, 16:34
- Forum: General
- Topic: Temperature Dependent Convective BC for Conduction
- Replies: 25
- Views: 1545
Re: Temperature Dependent Convective BC for Conduction
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 ...
- 03 Feb 2023, 03:30
- Forum: General
- Topic: Temperature Dependent Convective BC for Conduction
- Replies: 25
- Views: 1545
Re: Temperature Dependent Convective BC for Conduction
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....