Accession Number : AD0720688

Title :   Turbulent Flow Drag-Reduction by Dilute Poly(Ethylene Oxide) Solutions in Capillary Tubes.

Descriptive Note : Research and development rept.,

Corporate Author : NAVAL SHIP RESEARCH AND DEVELOPMENT LAB ANNAPOLIS MD

Personal Author(s) : Felsen,Ira Michael

Report Date : MAR 1971

Pagination or Media Count : 162

Abstract : The study was initiated to investigate turbulent flow drag-reduction by dilute poly(ethylene oxide) solutions in capillary tubes and thereby elucidate the mechanism of drag-reduction through interpretation of the experimental results. Flow through capillary tubes was chosen as a means to (1) obtain a large ratio of solid surface area to fluid volume, and (2) obtain high shear stresses at low Reynolds numbers. This allowed investigation of surface effects and polymer degradation as a function of a number of variables which are known to influence drag-reduction. (Author)

Descriptors :   (*SKIN FRICTION, REDUCTION), (*ADDITIVES, LUBRICANTS), SOLUTIONS(MIXTURES), EPOXY RESINS, CAPILLARY TUBES, TURBULENCE, POLYMERS, THESES

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE