DIAMETER (INCHES): 3 2.5 

 CORRES. SYMBOL: o A 



2 1.75 1.5 1.25 



□ •A 



1 0.75 0.5 

 ■ ♦ + 



C, 



M 



U^T/d 



Figure 12. Variation of inertia coefficient of cylinders.^ 



2. The variation of Cy and Cq throughout a given wave cycle were 

 e.xperimentally determined for use in the following equation: 



where 



F = force per unit length in direction of flow 

 Cy = coefficient of mass 



p = fluid density 



j2 

 Aq = — — where d = diameter of object 



U = undisturbed fluid velocity 

 Cp = drag coefficient 

 See results in figures 13, 14. and 15 for different values of period parameter. 



(24) 



26 



