The Effect of Additives on Fluid Friction 



10 



20 30 



CONCENTRATION, WPPM 



40 



100 



Fig. 7 - 7.6 cm disk torque reduction vs 

 poly(ethylene oxide) concentration 



10^ 

 DISK REYNOLDS NO. 



10^ 



Fig. 8 - Maximum torque reduction as a 

 function of Reynolds number 



965 



