The interaction between a turbulent boundary layer and a glancing shoc
k wave produced by a wedge is studied numerically and experimentally.
The flows correspond to a nominal Mach number 2.5, two widely differen
t Reynolds numbers, and a range of incidence angles giving both attach
ed and separated flows. The Reynolds number effects on several now fea
tures, including upstream influence, incipient separation, and incepti
on length, are discussed. The computations are compared with the low-R
eynolds-number experiments of Kubota and Stollery and also to some new
ly performed high-Reynolds-number experiments, and good agreement is a
chieved.