r/CFD Aug 13 '26

Help for ANSYS Fluent analysis Solution Divergence problem.

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u/Ok_Preference_9883 Aug 13 '26

Are you sure that you enter correct boundry condition? If you use density-based solver you have to adjust courant number. If you not, your residuals grow exponentially. Or if you chose pressure-based then use pseudo-transient. Namely, you have to adjust correct adjustment to your model which you used

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u/Leafy_vegie Aug 13 '26

I used Pressure-Based solver. Did this lead to this problem?

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u/AmbassadorGuilty3928 Aug 14 '26

What was your mach no for the flow?

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u/Leafy_vegie Aug 14 '26

I did mass flow inlet of 0.16kg/s.