Velocity Profile Effects on the Discharge Coefficient of Pressure-Differential Meters

[+] Author and Article Information
A. G. Ferron

Alden Hydraulic Laboratory, Worcester Polytechnic Institute, Worcester, Mass.

J. Basic Eng 85(3), 338-342 (Sep 01, 1963) (5 pages) doi:10.1115/1.3656594 History: Received January 19, 1962; Online November 03, 2011


Tests performed on a high-differential meter, venturi meter, and orifice indicated changes in the discharge coefficient with changes in upstream velocity distribution. These tests along with those by other investigators lead to the conclusion that all pressure-differential meters are affected by upstream velocity distributions when defined in some characteristic manner. This effect is increased as the beta ratio increases.

Copyright © 1963 by ASME
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