On the Compressible Flow Through an Orifice

[+] Author and Article Information
W. B. Brower

Rensselaer Polytechnic Institute, Troy, NY 12180

E. Eisler

Orbital Sciences Corporation, Tempe, AZ 85283

E. J. Filkorn

United States Air Force, Griffiss AFB, NY 13441

J. Gonenc

University of Connecticut, Storrs, CT

C. Plati

Ossining, NY 10562

J. Stagnitti

General Electric Co., Schenectady, NY 12306

J. Fluids Eng 115(4), 660-664 (Dec 01, 1993) (5 pages) doi:10.1115/1.2910195 History: Received March 16, 1992; Revised June 07, 1993; Online May 23, 2008


A new theory for the compressible flow through an orifice is presented which provides a significant advance over the approach currently employed. As the flow approaches the critical regime (local sonic condition), measurements diverge from the theoretical result due to the non-one-dimensionality of the flow. Nevertheless, a straightforward correlation is available, and the measurements for different pipe/orifice geometries all appear to lie in the vicinity of a single, universal curve. As the flow approaches the incompressible condition the correlation factor (the discharge coefficient) becomes unity.

Copyright © 1993 by The American Society of Mechanical Engineers
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