[ANSYS Meshing] Inflation layer mesh quality

neprendo · June 30, 2014, 10:22

Hi everyone.

I have a problem where I'm meshing a delta wing, looking at vortex lift. I'm using the inflation layers to get Y+=1. The problem is my orthogonal mesh quality in the inflation is awful. Is there a way to conserve quality while keep the Y+=1 Any help or tips would be greatly appreciated.

Nick

neprendo · July 2, 2014, 09:10

update: I found out the reason for the poor quality is the fact that the end points of the inflation layer is fixed at both ends. I need a 2 stage boundary condition around the wing

uhhvin · August 19, 2015, 03:29

Hi Nick.

Would you mind expanding a bit on your solution? I am having the same inflation issues at the tip of my aerofoil.

Thanks,
Erwin

neprendo · August 19, 2015, 05:20

Hi Erwin

I created a split in mesh which aligned with the sharp leading edge. The effect was that instead of the all 5 inflation layer cells having to all converge on the leading edge, they could then spread themselves out appropriately which gave me better mesh quality.

This only worked because of the symmetry of my airfoil. If yours isn't symmetrical like mine, you might have to do something more complex. If you can attach a picture of what you are trying to mesh I might be able to help.

Nick

August 19, 2015, 03:29	Care to elaborate?	#3
uhhvin New Member Erwin Join Date: Mar 2012 Posts: 1 Rep Power: 0	Hi Nick. Would you mind expanding a bit on your solution? I am having the same inflation issues at the tip of my aerofoil. Thanks, Erwin

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July 2, 2014, 09:10		#2
neprendo New Member Nick Prendergast Join Date: Dec 2013 Posts: 28 Rep Power: 13	update: I found out the reason for the poor quality is the fact that the end points of the inflation layer is fixed at both ends. I need a 2 stage boundary condition around the wing

August 19, 2015, 05:20		#4
neprendo New Member Nick Prendergast Join Date: Dec 2013 Posts: 28 Rep Power: 13	Hi Erwin I created a split in mesh which aligned with the sharp leading edge. The effect was that instead of the all 5 inflation layer cells having to all converge on the leading edge, they could then spread themselves out appropriately which gave me better mesh quality. This only worked because of the symmetry of my airfoil. If yours isn't symmetrical like mine, you might have to do something more complex. If you can attach a picture of what you are trying to mesh I might be able to help. Nick