Calculations of Real-Gas Effects in Flow Through Critical-Flow Nozzles

[+] Author and Article Information
Robert C. Johnson

Lewis Research Center, National Aeronautics and Space Administration, Cleveland, Ohio

J. Basic Eng 86(3), 519-525 (Sep 01, 1964) (7 pages) doi:10.1115/1.3653160 History: Received July 23, 1963; Online November 03, 2011


Computer calculations have been made of how real-gas effects modify the conventional one-dimensional equations for mass flow of air, nitrogen, oxygen, hydrogen, argon, helium, and steam through a nozzle. The results indicate that for critical flow of air, at room temperature and 100 atmospheres pressure, real-gas effects of 3 1/2 percent exist. Similar magnitudes are found for the other gases.

Copyright © 1964 by ASME
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