Investigation of Separation of the Turbulent Boundary Layer

;11 _ im,estigation was comlucted on a turbulel_t boundary laller near a,_mooth surf(we with pressure gradients _.uffieienl to cause flow separation. The Reym,lds number was high, but the speeds were eTdirely within tlte incompressible flow range. The investigation consisted ( _ measurements o. { mean flow, three components _J turbulenee inten,sit!l, turbulent shearing,_tre, % and correlations betweel _ two fluctuation components " at a point and betweel _ the same component at different point_'. Tke results are giren i _ _he.form o,f tables and graphs. The discussion deals fir,st with separation and then with, the more tu,damental que,_tbm qf basic concepts oJ turbulent few.