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RESEARCH PAPERS

A Method for the Extrapolation of Calibration Data of PTC 6 Throat Tap Nozzles

[+] Author and Article Information
J. W. Murdock

Drexel University, Philadelphia, PA 19104

D. R. Keyser

Naval Air Development Center, Warminster, PA 18974

J. Eng. Gas Turbines Power 113(2), 233-239 (Apr 01, 1991) (7 pages) doi:10.1115/1.2906550 History: Received July 01, 1990; Online April 24, 2008

Abstract

This paper describes a precise method for extrapolating the coefficient of discharge of PTC 6 throat tap nozzles using all or most of the calibration data. The theoretical basis for this method is described in a parallel paper [3]. Numerical examples are given using actual calibration data to describe this method. Because this method permits the use of all calibration data at or above Reynolds numbers of 1,000,000, it is a clear improvement over the PTC 6-1976 method, which permits only the highest single point.

Copyright © 1991 by The American Society of Mechanical Engineers
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