Lift Hysteresis problem in Oscillating Airfoil -- CFD Online Discussion Forums

February 6, 2008, 15:01	Lift Hysteresis problem in Oscillating Airfoil	#1
Farid Guest Posts: n/a	I have run a simulation for Alpha(t)=10+2sinwt. I got Cd hysteresis loop as the same as experimental but I got the Opposite loop for Cl. I am getting higher lift during the downstroke but it should be lower than that of upstroke. Can anybody help me regarding this problem. N.B. Airfoil is NACA0012, M=0.3, Re=0.54 Million.

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