NACA0012 does not get the result of the stall

cheng1 · May 9, 2021, 04:18

Hello everyone, I am now using openfoam to compare with experimental data. The results compare well before the stall. But when there is a stall situation and the lift coefficient should decrease, my lift coefficient is still increasing. Can someone tell me why this is. I am using simpleFoam, SA model.

HPE · May 9, 2021, 11:17

I don't think there is a RANS or even hybrid RANS-LES setup that can predict the polar coefficients correctly for a given airfoil at stall and post-stall regions.

Tobermory · May 9, 2021, 14:28

Quote:

Originally Posted by cheng1

I am using simpleFoam, SA model.

I think that you answered your own question there - it's not an OpenFOAM issue. Have a read up around the subject and you'll learn how difficult the problem is.

May 9, 2021, 04:18	NACA0012 does not get the result of the stall	#1
cheng1 New Member cheng Join Date: Apr 2021 Posts: 5 Rep Power: 5	Hello everyone, I am now using openfoam to compare with experimental data. The results compare well before the stall. But when there is a stall situation and the lift coefficient should decrease, my lift coefficient is still increasing. Can someone tell me why this is. I am using simpleFoam, SA model.

May 9, 2021, 11:17		#2
HPE Senior Member Herpes Free Engineer Join Date: Sep 2019 Location: The Home Under The Ground with the Lost Boys Posts: 932 Rep Power: 12	I don't think there is a RANS or even hybrid RANS-LES setup that can predict the polar coefficients correctly for a given airfoil at stall and post-stall regions. __________________ The OpenFOAM community is the biggest contributor to OpenFOAM: User guide/Wiki-1/Wiki-2/Code guide/Code Wiki/Journal Nilsson/Guerrero/Holzinger/Holzmann/Nagy/Santos/Nozaki/Jasak/Primer Governance Bugs/Features: OpenFOAM (ESI-OpenCFD-Trademark) Bugs/Features: FOAM-Extend (Wikki-FSB) Bugs: OpenFOAM.org How to create a MWE New: Forkable OpenFOAM mirror

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