I have been trying so hard with ANSYS Fluent and started to doubt myself and understanding of physics.
All I want is to obtain the temperature on both sides for a wall that is adjacent to a fluid, I have the thickness and the material properties.
I don't know why, but no matter what I do, Fluent only provides me only with the fluid temperature. I have tried creating a solid volume to represent my wall and gave it a thickness, and it still did not work. After initializing the solution and running it, the solver predicts a uniform temperature for the wall that is equal to the adjacent fluid temperature.
I am not the best one in heat transfer, but I tried all the boundary condition options in Fluent and failed miserably.
Am I missing something?
Very simple: I have a wall with known thermal conductivity, and would like to predict the temperature profile across the wall, or at least the temperature at the other side, what would be the appropriate boundary condition?
I tried using shell conduction and it also gave me the same results.
Thanks
The boundary condition depends on the case under investigation. Please provide more information on your geometry. For example, is there fluid on either side of the wall or just one side?
HI,
Before blaming the BCs, please make sure that your model was drawn correctly.
Can you share it please?
Good luck
I tried using the shell conduction option in Fluent and obtained uniform temperature for all layers, although they were defined as separate materials with different properties. I initialized them with a temperature different from the one of the adjacent fluid, and the solver predicts that the temperature of all layers becomes equal to the one of the fluid. It's like the layers don't have any sort of thermal resistance. Like there is conduction with zero resistance or the wall doesn't even exist. Once more: all material properties are proper and all thicknesses are non-zero.
Amin Shahsavar I ran two cases, one with fluid on one side, and the other with fluid on both sides. I think it should work in either case because I am giving the solid a separate domain.
Ahmed Mahmood Abdullah Daabo The model is drawn 100% correctly, thank you very much. There are volumes to represent both the solid and the fluid. Volume for the fluid on one side, volume for the fluid on the other side, and in the middle a third volume representing the solid. All material properties were defined for each volume.
I am not sure how Fluent works, but I believe, even if I gave it just a single volume representing the fluid, I should get a temperature difference at the boundaries if I gave it a thickness (why is there a thickness anyway if you were going to predict constant temperature?).
As a simple check for your model?
Have you activated the Coupled button? Ahmed Osama Mohamed Elhassan Mahgoub
Ahmed Mahmood Abdullah Daabo
Yes, I have checked the coupled thermal boundary condition, and it failed. Using it doesn't change the results.
Unless you are referring to the coupled pressure solver?
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