July 9, 2021 at 9:41 amJonnSubscriber
I am studying the temperature change of a wall, but when I enter a parameter Convection for both sides,
When starting the calculation, the temperature does not take its initial value as 303 K .
But when I have one parameter of convection , I don't have this problem
Is there a modeling method?July 9, 2021 at 11:45 amRKAnsys EmployeeHello,
You can set the initial value to 303 K and initialize it.
July 9, 2021 at 2:45 pmJuly 9, 2021 at 3:14 pmDrAmineAnsys EmployeeI do not understand the setup. Inlet or pure walls?
July 9, 2021 at 3:18 pmDrAmineAnsys EmployeeOkay you have only solid with two walls having mixed or thermal boundary condition or at least the left one using temporal profile. I do not now understand the problem as I do not see a problem
July 10, 2021 at 12:26 amJonnSubscriberI am studying the temperature change at the outlet side of a single layer wall
The entrance and exit is a wall
I give the inlet side a variable temperature that starts with a value 303k and increases with time. File UDF and a heat transfer coefficient h=24
For the outlet side, i give it a constant temperature 297k and a heat transfer coefficient h=7
But when I start the calculation, the initial values of the two walls are not the same as the values I entered ''see the picture ''
July 12, 2021 at 10:57 amRobAnsys EmployeeCan you post an image of the mesh?
July 12, 2021 at 10:02 pmJuly 13, 2021 at 11:56 amDrAmineAnsys EmployeeAt inlet you give T=303 K + 1 K /15 [s] * time and HTC. So actually you are not providing the temperature boundary directly but a robin like BC: convective BC. Fluent will need to calculate the boundary temperature based on that: balancing the convection outside with conduction inside.
July 13, 2021 at 6:42 pmJonnSubscriberOK thank you sir
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