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Re: Drag Coefficient (Cylinder 2D)


Hi, Liliana, Pedro!rnrnI am intrested in drag force too. I simulate the fluid flow in a rectangular channel with sphere in its center. So if

drag given by the code is already the drag coefficient

, it should be equal to the 0.47 for Re = 10 000 ( But in my simulation it’s about 5.0, but it is not a constant value (fluid velocity and density are constant in this simulation). Can you explain the reason of such difference?rnAlso can you tell me, how OpenLB calculates the Reynolds number?rnrnThanks,rnAlina.