Isothermal, Compressible-Gas Flow in Horizontal Pipes With an Imperfect Gas

[+] Author and Article Information
N. Madsen

Department of Chemical Engineering, The University of Rhode Island, Kingston, R.I. 02881

P. Ramamoorthy

Department of Chemistry, The University of Rhode Island, Kingston, R.I. 02881

J. Fluids Eng 101(1), 76-78 (Mar 01, 1979) (3 pages) doi:10.1115/1.3448738 History: Received October 20, 1977; Online October 12, 2010


A method for calculating pressure drop, based on a three parameter “law” of corresponding states, is developed rigorously from thermodynamic and fluid dynamic principles. A pressure correction factor Y = 0.6527 + 0.3473Z is adequate for most practical problems, when the pressure is low and the compressibility factor, Z, is a linear function of the pressure. This result is checked against computations from natural-gas engineering, where the correction is not negligible. However, the method is applicable, by means of machine calculations, to problems where Z is not a linear function of pressure.

Copyright © 1979 by ASME
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