ts Subscript for quantities at self-excited transition point 



U Velocity at outer edge of boundary layer 



U^ Velocity of undisturbed incoming stream 



u Velocity of fluid parallel to surface of body in a;-direction 



(mean velocity for turbulent flows) 



«' Turbulent fluctuation in u 



V Velocity of fluid normal to surface of body (mean velocity 

 for turbulent flows) 



v' Turbulent fluctuation in v 



X Arc length along meridian profile 



y Distance normal to body surface 



a Angle between tangent to surface and axis of body 



8 Thickness of boundary layer 



S* Two-dimensional displacement thickness 



Cq Constant in power law for local coefficient of skin friction 



in Equation [74] 



Two-dimensional momentum thickness, • (l-—\ — dv 



Jol ^h 



A* Displacement area, ll-—\rdy 



y. Viscosity of fluid 



V Kinematic viscosity of fluid 

 p Density of fluid 



a Normal-stress term, pw'^ 



T Shearing stress, |[i-^- p «'■»'• 



r^ Shearing stress at body surface 



(f) Angle between a meridian plane and the reference meridian plane 



fi Momentum area, (l-—\ — Tdy 



Jol ^1^ 



fi^ Momentum, area of wake at infinity downstream 



Subscript for quantities at zero pressure gradient on flat plates 



— ' Tilde over equivalent two-dimensional quantities 



