Vogel and Patterson 



There appears to be a slight increase in the concentration of the dye at the cen- 

 tre of the wake for the polymer injection. The maximum reading for the water 

 was 95 parts in 10^, while for the polymer it was 97.5 parts in 10^. The differ- 

 ences in shape at the outer portion of the wake are more likely the effect of the 

 misalignment of the body than the effect of injecting the polymer solution. These 

 runs do indicate that the solution is diluted appreciably in the boundary layer. 

 At the centre of the wake the dilution is about 100:1, while at the edge of the wake 

 it is at least 10,000:1. 



Numbers are 

 parts of Rhodomin 

 per 10* ports 



CROSS -SECTION OF WAKE 7cm, DOWNSTREAM OF BOOY- 

 NO POLYMER INJECTED 



CROSS -SECTION OF WAKE 7cm DOWNSTREAM OF BODY- 

 WITH lOOppm. POLYOX WSR-301 INJECTED FROM Nn<^F ci at 



Figure 17 

 990 



