Question

What will be the value of cp in region ofvth flow where v>v?

Answer 1

Separation occurs theoretically at the point where Cf is zero. So, if you have a cf(x) graph, you can find this point easily.

However, it is not so easy to find it from a Cp(x) graph. A separation may be expected normally after a minimum pressure point along a surface, but it is not certain, and if there is a separation you can not predict the separation point exactly from the Cp(x) graph, instead you must calculate the boundary layer and find the point where Cf is zero.

Hope it helps ✌✌❤