35 



Figure 17 - Coefficient B of General Auxiliary Equation Compared for 

 Various Formulations at Reynolds Number R = 1 x 10 5 



Although this fact does not conclusively prove the validity of the modified 

 moment -of -momentum equation, it does indicate that — as such — the modified 

 moment -of -momentum equation has a proper range of values for an auxiliary 

 equation giving the variation of H. There is a need for a larger body of re- 

 liable measurements of turbulent boundary layers under a variety of conditions 

 and for increased emphasis on measurements of the shearing stresses both at 

 the surface and throughout the boundary layer. 



SUMMARY OF METHOD OF CALCULATING TURBULENT BOUNDARY LAYERS 

 IN A PRESSURE GRADIENT 



For calculating turbulent boundary layers in a pressure gradient the 

 following relations are involved: The momentum equation for two-dimensional 

 flows, 



ae 



dx 



= -<»^)fi + (i)^J 



[82a] 



