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RESEARCH PAPERS

Flow and Pressure Head at the Inlet of Narrow Passages, Without Upstream Free Surface

[+] Author and Article Information
N. Tipei

Mechanical Research Department, General Motors Research Laboratories, Warren, Mich. 48090

J. of Lubrication Tech 104(2), 196-202 (Apr 01, 1982) (7 pages) doi:10.1115/1.3253180 History: Received March 03, 1981; Online November 13, 2009

Abstract

A model of the flow at the inlet of narrow passages, based on the theory of potential flows, is presented. No free surface is supposed to exist. A boundary layer is carried by a moving boundary; the impact of the fluid with the frontal surface of the other body, at rest, generates various flow patterns, as well as a pressure head at the entrance of the gap. A complete theory is presented, then a simplified model is shown, and flow mappings are obtained. The pressure head is calculated and shows an important dependence on the pressure gradient at the inlet of the passage.

Copyright © 1982 by ASME
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