Table. Drag coefficients. 



Object 



L/d 



Reynolds number 



CD 



Circular cylinder 



Q 



105 

 10^ 

 10^ 

 >5 X lO' 



0.63 

 0.74 

 1.20 

 0.33 



Square cylinder 



3.5 X 10 



10"+ to iqs 



2.0 



1.6 



Rectangular flat plate 

 ( totally submerged ) 



T 



d 



J. 



1 



5 

 20 



>10^ 



>io- 

 >io' 

 >io' 



1.1 

 1.2 

 1.5 

 2.0 



NOTE.--L = The height of a submerged cylinder, or the length of the 

 flat plate. 



d = The projected dimension shown, or the width of the flat 

 plate. 



