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RESEARCH PAPERS: Other Technical Papers

Rarefied Gas Flow Through Long Square Tubes

[+] Author and Article Information
Mancil W. Milligan, Kerry E. Patterson

Mechanical and Aerospace Engineering Department, University of Tennessee, Knoxville, Tenn.

J. Eng. Ind 93(2), 751-754 (May 01, 1971) (4 pages) doi:10.1115/1.3427993 History: Received July 16, 1970; Online July 15, 2010

Abstract

A theoretical model has been developed for gas flow through long square tubes. The continuum differential equation is solved with noncontinuum slip boundary conditions and the “self-diffusion” or normal molecular transport effect is obtained by numerical integration. Specific flow rates as predicted by this theoretical model are compared with experimental data which were obtained using a 0.0985-in-square tube with argon as the test gas. In addition, a comparison is made using a “hydraulic radius” in the equation which Weber developed for rarefied gas flow through cylindrical tubes. Good agreement between theory and experiment give a high confidence level to the theoretical model.

Copyright © 1971 by ASME
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