Influence of Channel Curvature on Flow, Pressure Distribution, and Power Requirements of Screw Pumps and Melt Extruders

[+] Author and Article Information
M. L. Booy

Engineering Service Division, Engineering Department, E. I. du Pont de Nemours & Company, Inc., Wilmington, Del.

J. Eng. Ind 86(1), 22-30 (Feb 01, 1964) (9 pages) doi:10.1115/1.3670443 History: Received June 27, 1962; Online December 08, 2011


The influence of channel curvature on flow through screw pumps and melt extruders is derived for infinite channel aspect ratios. Flow rate and horsepower relations for flow of Newtonian liquids are given as functions of design parameters. The results of this cylindrical theory are compared with those of conventional theories. Curvature factors converting the equations of the flat plate theory to those of the cylindrical theory are shown. Pressure distributions in screw pump channel are analyzed.

Copyright © 1964 by ASME
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