range of values of the parameter a^ for the three-dimensional body. At most axial 

 positions for the 0- and 67-degree locations, the value of a^ is, approximately, 

 0.16 for n /6 <_ 0.8. The value of a reduces to 0.07 at the 80-degree plane, the 

 region of separation predicted by the C K computer code. For the remaining angular 



positions, the value a^ fluctuates between 0.04 and 0.16. A reduction in the value 



12 

 of the parameter a^ was also found by Shiloh et al. near separation for an airfoil 



type flow. 



The free-stream turbulent velocity fluctuations were not removed from the 



2 

 measured values of q . The reduction in the values of a near the edge of the 



boundary layer may be caused, in part, more by the larger contribution of the free- 



stream turbulence to q than to -u v 



X n 



EDDY VISCOSITY AND MIXING LENGTH 



The values of eddy viscosity and mixing length are not measured directly, but 



1,2 



are obtained, as in the axisymmetric case. 



from the measured values of the 



Reynolds stress -u'v and the mean velocity gradient 8u /9n . The definitions used 

 •^ X n X e 



to compute these quantities are 



9u 



= r 



8u 



+2 



8n 



8wg 

 8n 



1/2 



cos 6 



9u 



y 



9^ 



(6) 



When the values of Wq/u are less than 0.1 and the value of 6 is 90 degrees for the 

 U X 



present measurements. Equation (6) may be approximated by 



u V = Jo 

 X n 



9u 

 > 



9^ 



9u 

 } 



9n 



(7) 



15 



