Initial Boundary condition of velocity for flow over the cylinder by LES simulation -- CFD Online Discussion Forums

March 19, 2018, 03:06	Initial Boundary condition of velocity for flow over the cylinder by LES simulation	#1
AM10 New Member Join Date: May 2014 Posts: 2 Rep Power: 0	Hi all, I am simulating flow over the cylinder with LES in OpenFOAM. I am not sure about the initial boundary condition for velocity at the inlet. I ran the simulation with the fixed uniform velocity at the inlet but there is overprediction in Lift and Drag coefficient. For this case, the Turbulent intensity has been kept same as experimental data. Simulation: Cd=1.48, Clrms=0.808 Experiment: Cd=1.14 Clrms=0.36 Please provide me some suggestion to overcome this problem

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