Figure 3 - Velocity Profiles of a Turbulent Boundary Layer 

 In a Pressure Gradient (Gruschwitz, Reference 5) 



Power Low (Pretsch) 



11 = ' " [h(H+I)J 





«?* 



c^U 



.+»' 



7 



/ 



/ 



Symbol Gruschwitz Test 



0.5 



?7 



Figure 4 - Shape Parameter H as Function of Gruschwitz Form Parameter r\ 

 (Schlichting, Reference 3) 



Instead of r\ , von Doenhoff and Tetervin preferred the use of the 

 shape parameter H itself as the single parameter to characterize the shape of 

 the velocity profiles. Points from an extensive collection of test data were 

 plotted together in the form 



•= f, 



}■«) 



mi 



