TABLE 6 - COMPARISONS OF MEAN- SPEED INCREMENTS ON A 



SPHEROID IN A WIND TUNNEL, COMPUTED BY A NUMERICAL 



METHOD, APPROXIMATE FORMULAS (u /U=0. 0813557 



OBTAINED BY LAMB WAS USED) 



R /b 

 o 



u/U 



Au/U 



Exact 



Present 



Formula 



(Equation (6)) 



Lock and Johansen 

 (Equation (16)) 



1.25 

 1.5 



2 

 3 

 4 

 5 

 15 



0.98204 

 0.52285 

 0.26702 

 0.14442 

 0.11088 

 0.09748 

 0.08185 



0.90050 

 0.44129 

 0.18546 

 0.06287 

 0.02932 

 0.01593 

 0.00030 



0.93965 

 0.47716 

 0.21559 

 0.08505 

 0.04624 

 0.02920 

 0.00320 



1.22419 

 0.70844 

 0.29888 

 0.08856 

 0.03736 

 0.01913 

 0.00071 



1 





















/ / 













/ / 













/ / 













/ / 

 / / 



/ / 

 / / 



0.5 











/ / 











/ / 













/ 













/ Au/U 











^s * 



' 











/ / 













^s / 











— —■-"""'"^7^- 







n 



__l mm . - 



— ~"~\ 



i 



I 



0.2 



0.4 

 b/R„ 



0.6 



0.8 



Figure 4 - Added Mass Coefficient m and Speed Correction 

 Au/U for a Spheroid in a Circular Wind Tunnel 



18 



