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RESEARCH PAPERS

Computation of the Critical Flow Function, Pressure Ratio, and Temperature Ratio for Real Air

[+] Author and Article Information
Robert M. Reimer

Flight Propulsion Laboratory Department, General Electric Company, Cincinnati, Ohio

J. Basic Eng 86(2), 169-173 (Jun 01, 1964) (5 pages) doi:10.1115/1.3653020 History: Received September 13, 1962; Online November 03, 2011

Abstract

A method of computing the critical flow function, critical pressure ratio, and critical temperature ratio is presented. Use is made of the NBS Circular 564 tabulated data of the speed of sound, enthalpy, and compressibility. Computations are made for dry real air at stagnation temperature from 60 to 100 F and stagnation pressure from zero to 300 psia. The change in the flow function and ratios is 0.9, 0.5, and 0.4 percent, respectively, over this range. Calculations are also performed at elevated pressure and temperature.

Copyright © 1964 by ASME
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