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RESEARCH PAPERS

On the Mechanism of Fluid Transport Across the Grinding Zone

[+] Author and Article Information
C. C. Chang, S. H. Wang

Department of Mechanical Engineering, University of Pittsburgh, Pittsburgh, PA 15761

A. Z. Szeri

Department of Mechanical Engineering, University of Delaware, Newark, DE 19716

J. Manuf. Sci. Eng 118(3), 332-338 (Aug 01, 1996) (7 pages) doi:10.1115/1.2831033 History: Received July 01, 1993; Revised October 01, 1994; Online January 17, 2008

Abstract

By considering both hydrodynamic pressure and ram pressure effects on flow through a porous wheel, we construct here a predictive model for calculating the flow-rate of the cooling fluid through the grinding zone. The hydrodynamic pressure is computed by means of a modified Reynolds equation, with upstream boundary conditions supplied by the ram pressure. To find the tangential velocity, the radial velocity, the depth of penetration of the fluid into the wheel, and the flow rate through the grinding zone, we solve momentum and continuity equations for flow through porous media. An empirical correlation for permeability, containing two dimensionless parameters, is employed to provide correction for wheel surface roughness, yielding theoretical results that show good agreement with experimental data for both conventional and creep feed grinding.

Copyright © 1996 by The American Society of Mechanical Engineers
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