Accession Number : AD0749103
Title : The Influence of Drag Reducing Polymer Additives on Surface Pressure Fluctuations on Rough Surfaces.
Descriptive Note : Project rept. 1 Nov 67-30 Apr 70,
Corporate Author : MINNESOTA UNIV MINNEAPOLIS ST ANTHONY FALLS HYDRAULIC LAB
Personal Author(s) : Killen,John M. ; Almo,John A.
Report Date : SEP 1971
Pagination or Media Count : 52
Abstract : Experimental measurements were made to determine the effect of drag reducing polymer additives on the surface pressure fluctuations on smooth and rough surfaces in relative motion with water. Changes in surface pressure fluctuation intensity, caused either by the addition of drag reducing polymer or by changes in surface roughness, or both, were found to correlate with changes in surface shear. (Author)
Descriptors : (*SKIN FRICTION, REDUCTION), (*FLUID MECHANICS, ADDITIVES), PRESSURE, DRAG, SURFACE ROUGHNESS, POLYMERS, ANALYSIS OF VARIANCE, HYDRODYNAMICS, SHEAR STRESSES
Subject Categories : Fluid Mechanics
Distribution Statement : APPROVED FOR PUBLIC RELEASE