Unateady flow over airfoil -- CFD Online Discussion Forums

June 18, 2012, 11:44	Unateady flow over airfoil	#1
mahzad Member mahzad_kh Join Date: Jun 2010 Posts: 38 Rep Power: 16	Hi every one I am simulating an airfoil with plunge oscillation and the airfoil, when it has natural shedding in an incompressible low Re flow. The flow is unsteady and I wanna calculate Cp at different times(some selected time steps). Now I have some questions: 1) when I want to calculate cp in a special time for airfoil with natural shedding, can I use the simple formula for calculating Cp? I mean Cp=(p-p_inf)/q which P_inf is the pressure in the far field boundary! 2) when I am applying force oscillation, for example plunge oscillation, how can I calculate Cp again? does anyone know how to calculate Cp in this case? Thanks for any words! Last edited by mahzad; June 18, 2012 at 12:22.

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