Experimental measurements were made of radiated noise
from a rough surface moving in water and from the same surface
moving in a dilute water solution of a drag reducing polymer.
Roughly 10 dB of noise reduction was observed for a concentration
of 100 ppmw Polyox 301.
The Influence of Drag Reducing Polymer on Radiated Noise from Rough Surfaces.
St. Anthony Falls Hydraulic Laboratory.
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