Anony-mouse
Apr26-08, 10:25 AM
how do i go about proving that both the lift and drag coefficients are dependant on reynolds number? I know that the Buckingham Pi theorem is meant to be used here, but im slightly confused how to use it. I initially thought i had to rearrange the drag (and lift) force equation to get the density on one side i.e ρ=(2Cd.u^2.A)/Fd and then place this into reynolds equation by replacing the density there with (2Cd.u^2.A)/Fd however i dont see how this proves that the drag coefficient is dependant on reynolds number.