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Divergence in AMG solver:pressure coupled but no iterations performed

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Old   April 25, 2024, 15:01
Question Divergence in AMG solver:pressure coupled but no iterations performed
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Yash
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Hello, I am having issues with my CFD attempt. I am using Ansys Fluent Student edition 2024 R1. I have tried multiple youtube tutorials as well as asking some of my professors but am unable to find a solution to my problem. It gives me the error saying "Divergence detected in AMG solverressure coupled.". I have tried improving my mesh as well as lowering the Under-Relaxation factors to no avail. I am attaching my mesh statistics and the geometry. I am also adding the console logs as a part of this post

It's a 2D axisymmetric simulation with inlet velocity of 50 m/s (although I did attempt 10 m/s too). My mesh metrics are as follows

Max Aspect Ratio: 2.05
Min Element Quality: 0.43896
Max Skewness: 0.55119
Min orthogonal quality: 0.7162



I am under time constraints so any expedited help would be much appreciated. Thank you in advance.
Attached Images
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File Type: png image_2024-04-25_195729416.png (21.7 KB, 2 views)
File Type: png image_2024-04-25_195743838.png (10.7 KB, 2 views)
File Type: png image_2024-04-25_195806490.png (19.6 KB, 2 views)
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Old   April 26, 2024, 10:32
Smile I figured it out
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Yash
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All I had to do was rotate my model 90 degrees so that the axis aligned with the x-axis in ansys. Found it out by troubleshooting and experimenting with a different geometry. Hope this helps for anyone else who has this problem in the future.
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