Alpha Geek
$10/per page/Negotiable
Consider the flat-walled diffuser in Fig. P7.50, which is similar to that of Fig. 6.26a with constant width b. If x is measured from the inlet and the wall boundary layers are thin, show that the core velocity U(x) in the diffuser is given approximately by
where W is the inlet height. Use this velocity distribution with Thwaites’s method to compute the wall angle θ for which laminar separation will occur in the exit plane when diffuser length L =2W. Note that the result is independent of the Reynolds number.
