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RESEARCH PAPERS

Flow of Greases Under the Action of Complex Shear

[+] Author and Article Information
G. V. Vinogradov, A. A. Mamakov

Institute of Petrochemical Synthesis, The Academy of Sciences of the USSR, Moscow, USSR

J. of Lubrication Tech 90(3), 604-607 (Jul 01, 1968) (4 pages) doi:10.1115/1.3601633 History: Received April 10, 1968; Online August 23, 2011

Abstract

Experiments were performed in a coaxial cylinder viscometer in which there were realized separately and simultaneously flows of grease and bright stock (Newtonian fluid) in the axial and peripheral direction. The latter was at uniform shear stress field. The effect of peripheral on axial-flows was a great decrease in resistance toward deformation in the axial direction. This is a very important peculiarity of greases, which are non-Newtonian media, when considering their flow in labyrinth boxes and some other devices. The effect of axial on peripheral flow showed somewhat increased resistance toward the latter. Such behavior was attributed to continuous inflow of fresh grease into the annular space where it did not remain long enough for structural destruction to reach a limiting value.

Copyright © 1968 by ASME
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