Is high aspect ratio a problem when the analysis is converged?

rookie34 · April 20, 2023, 13:23

Hi,

I want to know, if a mesh structure has high aspect ratio (about 1800) but the analysis is converged, is high aspect ratio a problem? Will my results inaccurate?

Thank you!

LuckyTran · April 20, 2023, 13:52

Yes high aspect ratio cells can still cause problems beyond convergence. Convergence is not a guarantee of accuracy.

But 1800...? Just delete the cell at that point. =)

rookie34 · April 20, 2023, 14:45

Thank you for replying.

The cells with high aspect ratio are inside the boundary layer. I don't think it's ok to delete them. And I cannot decrease it without increasing number of cells.

April 20, 2023, 13:23	Is high aspect ratio a problem when the analysis is converged?	#1
rookie34 New Member Join Date: Apr 2023 Posts: 7 Rep Power: 3	Hi, I want to know, if a mesh structure has high aspect ratio (about 1800) but the analysis is converged, is high aspect ratio a problem? Will my results inaccurate? Thank you!

April 20, 2023, 13:52		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,761 Rep Power: 66	Yes high aspect ratio cells can still cause problems beyond convergence. Convergence is not a guarantee of accuracy. But 1800...? Just delete the cell at that point. =) arjun and rookie34 like this.

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April 20, 2023, 14:45		#3
rookie34 New Member Join Date: Apr 2023 Posts: 7 Rep Power: 3	Thank you for replying. The cells with high aspect ratio are inside the boundary layer. I don't think it's ok to delete them. And I cannot decrease it without increasing number of cells.