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RESEARCH PAPERS

Analysis and Optimization of Semicircular and Straight Lobe Viscous Pumps

[+] Author and Article Information
M. Mainland, I. Green

The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405

J. Tribol 114(3), 515-521 (Jul 01, 1992) (7 pages) doi:10.1115/1.2920913 History: Received February 08, 1991; Revised June 01, 1991; Online June 05, 2008

Abstract

A viscous pump design that is capable of producing higher flow rates than a viscous pump previously introduced by Etsion and Yaier (1988) is developed and investigated. The key to the new design is straight lobes as opposed to the semicircular lobes of the previous design. The geometry of the straight lobes does not lend itself to as straightforward a solution as the semicircular lobe analysis. Approximations are made and then verified using upper and lower shape factor bounds and finite element analyses. Lobe geometry for each lobe design is optimized to produce maximum pumping capacity. The results of the optimization show that the straight lobe pump is theoretically superior to the semicircular lobe pump.

Copyright © 1992 by The American Society of Mechanical Engineers
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