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Kinetic theory analysis of rarefied gas flow through finite length slotsA kinetic-theory analysis is made of the flow of a rarefied monatomic gas through a two-dimensional slot connecting two reservoirs. Numerical solutions are obtained by the moment and discrete-ordinate methods. The former method portrays the transition-regime characteristics well but has limitations in the free-molecule regime. The latter method gives accurate results in the free-molecule and slip regimes and bolsters confidence in the accuracy of the transition-regime results. The numerical solution for the mass flux through the slot agrees well with an approximate analytical solution of the moment equations for length-to-width ratios from 6 to 0.5, pressure ratios from 0.8 to 0.1, and Knudsen numbers from 5 to 0.5.
Document ID
19770061501
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Raghuraman, P.
(California Univ. Berkeley, CA, United States)
Willis, D. R.
(California, University Berkeley, Calif., United States)
Date Acquired
August 9, 2013
Publication Date
June 1, 1977
Publication Information
Publication: Physics of Fluids
Volume: 20
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
77A44353
Distribution Limits
Public
Copyright
Other

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