18 



• SchLDouer and SkramstQd,Ref.(l3) 



+ Hall and Hislop,Ref.(29) L Flat Plate 



X Dryden, Ref.(28) _) 



O Sctiubauer, Ref.(16), Elliptic Cylinder 



-6 



, Percentage Turbulence 



Figure 5 - Position of Transition in a Turbulent Stream 



A similar trend for boundary layers with pressure gradients is indicated by the test data 

 for the flow over an elliptic cylinder^ ^ as plotted in Figure 5. On the basis of the neutral 

 stability point and the self-excited transition point as the lower and upper limiting positions 

 of transition for boundary layers with pressure gradients in general, a rough criterion may be 

 established for estimating the position of transition on bodies immersed in streams containing 



