Airfoil conditions for unsteady flow -- CFD Online Discussion Forums

April 24, 2008, 12:48	Airfoil conditions for unsteady flow	#1
Dave Guest Posts: n/a	Hi Guys, I was talking to a colleage today about a code I've been working on. I'm solving the transonic flow around a moving airfoil. I have taken the boundary condition on the airfoil to be that of flow tangency - my colleage informs me that in unsteady flow the flow is not really tangential to the moving airfoil surface. Could someone please let me know why? I'm pretty confused over this issue. Dave

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