Pitching NACA64A010

wystone · May 15, 2020, 16:38

HELLO,

I am trying to run the pitching NACA64A010 unsteady case with SU2 7.0.4. However, large discrepancy was observed between the results of SU2 6.2 and SU2 7.0.4 when using the same CFD set-up. It seems to me that the SU2 7.0.4 somehow produces wrong moment, whereas the results of SU2 6.2 agree well with the literature. Does anyone have the similar problems?

Thanks.

pro_ · May 23, 2020, 11:39

What was the literature you were referring to? For my pitch-plunge case I do see a difference

TKatt · May 27, 2020, 10:25

Hi wystone,

To make it short: there was a bug which was just worked out regarding grid velocities on Euler/Symmetry walls. I hope that it will be in the next SU2 stable version soon. Until then you can check out the branch `fix_gridvel` and try the case with that.

I'll write a note here when that is merged.

I am optimistic that this will recover the results of 6.2

Cheers, Tobi

wystone · May 29, 2020, 10:23

Hi TKatt,
Many thanks for the clarification. That will be great if the bug can be fixed in the next SU2 version.
Cheers.

pcg · May 29, 2020, 13:15

It should be fixed and the version got out today.

May 15, 2020, 16:38	Pitching NACA64A010	#1
wystone New Member Join Date: May 2020 Posts: 2 Rep Power: 0	HELLO, I am trying to run the pitching NACA64A010 unsteady case with SU2 7.0.4. However, large discrepancy was observed between the results of SU2 6.2 and SU2 7.0.4 when using the same CFD set-up. It seems to me that the SU2 7.0.4 somehow produces wrong moment, whereas the results of SU2 6.2 agree well with the literature. Does anyone have the similar problems? Thanks.

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May 23, 2020, 11:39		#2
pro_ New Member pro Join Date: Mar 2020 Posts: 25 Rep Power: 6	What was the literature you were referring to? For my pitch-plunge case I do see a difference

May 27, 2020, 10:25		#3
TKatt Member na Join Date: Jul 2018 Posts: 83 Rep Power: 7	Hi wystone, To make it short: there was a bug which was just worked out regarding grid velocities on Euler/Symmetry walls. I hope that it will be in the next SU2 stable version soon. Until then you can check out the branch `fix_gridvel` and try the case with that. I'll write a note here when that is merged. I am optimistic that this will recover the results of 6.2 Cheers, Tobi

May 29, 2020, 10:23		#4
wystone New Member Join Date: May 2020 Posts: 2 Rep Power: 0	Hi TKatt, Many thanks for the clarification. That will be great if the bug can be fixed in the next SU2 version. Cheers.

May 29, 2020, 13:15		#5
pcg Senior Member Pedro Gomes Join Date: Dec 2017 Posts: 465 Rep Power: 13	It should be fixed and the version got out today.