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Negative Drag on Airfoil

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October 1, 2013, 07:23	Negative Drag on Airfoil	#1
jasonbot Member Jason Join Date: May 2013 Location: South Africa Posts: 32 Rep Power: 13	I am getting relatively accurate Lift measurements but my drag values are all negative for my airfoil. I have tried a number of turbulence models and all give the negative drag. I have obtained some form of mesh independence by using the Adapt Gradient tools. I think I might have a problem with my reference values? Does anyone know how I could change my coordinate system?

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airfoil, ansys, lift, negative drag

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