Tagged: ansys, ansys-fluent, cfd, fluent, heat-transfer
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March 20, 2022 at 10:19 am
Tensionmember
SubscriberMarch 21, 2022 at 11:33 amRob
Ansys EmployeeAdding the variables means the data is saved into the .dat file, not that anything extra is calculated. Have you turned the Energy equation on?
March 22, 2022 at 2:40 pmTensionmember
SubscriberEnergy Equation is turned on, yes.
I uploaded the Model so that you can see my current settings.
Unfortunately I cannot display the results using contours, none of the added variables are displayed in the results window. Additionally, I can only select the additional data quantities in the "Run Calculation" screen of Fluent, in the top left tab under "file" they are grayed out, even after the calculation has been initialized.
Thanks in Advance
March 22, 2022 at 3:10 pmRob
Ansys EmployeeIf you initialise and run the calculation you should be able to plot various field values (including HTC) on walls and user surfaces in Fluent. The heat flux can be found in the flux reports.
March 22, 2022 at 8:54 pmTensionmember
SubscriberThank you Rob
I have looked once in the reports, unfortunately all report are marked as unavailable. It is going in the right direction. How can I take it into account?
The possibility to upload pictures here is denied to me right now, I don't know what the problem is. I have now uploaded the report to a Drive folder, at the following link:
https://drive.google.com/drive/folders/1EtOKD7ls50Fa1YBxm9ggthPwBgIdn3Iz?usp=sharing
Thanks in advance
March 24, 2022 at 4:20 pmRob
Ansys EmployeeTry again now, the site was playing up yesterday. I'm not permitted to open links or attachments to comply with Legal's rules.
March 24, 2022 at 7:48 pmDrAmine
Ansys EmployeeI assume you want to visualize in CFD Post? If you select contour plots category Wall Fluxes then you should select to see surface HTC.
March 25, 2022 at 4:59 pmTensionmember
SubscriberThats exactly what i want to do, DrAmine. But where can I select the different contour plots?
Additionally, how is it possibly to give a body an increasing or decreasing temperature over the height of itself.
Tensionmember
March 25, 2022 at 5:24 pmRob
Ansys EmployeeIf you want to vary temperature over a surface you're looking at using one of a profile, expression or UDF.
March 25, 2022 at 6:24 pmTensionmember
SubscriberMarch 28, 2022 at 2:22 pmRob
Ansys EmployeeThat should work, if you display temperature only on that zone what do you see? I assume you've got a sensible conductivity value set?
Edit: reformulate the expression in K and leave the Fluent solver units in K. In theory it shouldn't make a difference, but the FIX function can be a bit odd sometimes.
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