29 

 Prom [12], where a power law for the velocity profile is assumed, 



K = H o - i 



Then 



[70] 



The value of I is now derived analytically from the momentum and 

 from the moment -of -momentum equations for flat plates with zero pressure gradi- 

 ent (ti = 0) in the following manner. The moment -of -momentum equation, [27], 

 reduces to 



and the momentum equation to 



d0 _ _w JL 

 dX " P M Z 



Combining both equations gives 



dH, 



[72 



[50] 



*dT= (»: "1)[h. " < H o + 1 > Ioji t73] 



3 < H o - D[h, - (H + 1) I ] 

 d0 



U 6 

 In terms of PL = — , [7^] becomes 



v V 



dH (H* - T) H - (H 



'. + 1 > X o] 



•dR ~ R, 



[74] 



[75] 



Differentiation of the empirical equation of H Q , Equation [58], with respect 

 to R ( produces 



dHo (-0.1980 + 0.0378 log 10 R,) H 

 dR ~ R„ 



