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Kinetic relaxation of a non-Maxwellian monatomic gas in a state of gross restThe kinetic relaxation of a monatomic gas in a state of gross rest is studied by use of Maxwell's second-order moment equation. The molecular models considered range from the hard sphere to the Maxwell molecule. The development is exact for an ellipsoidal distribution and becomes a good approximation for more general distributions. The results show that the relaxation of second-order moments is nearly exponential for power-law molecules and that the characteristic time mu/p appears as the principal controlling parameter while the power-law constant plays a secondary role. Comparisons between results of numerical simulations using Bird's direct simulation Monte Carlo method and theory show excellent agreement for both hard-sphere and Maxwell molecules.
Document ID
19930055397
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Baganoff, D.
(Stanford Univ. CA, United States)
Date Acquired
August 16, 2013
Publication Date
May 1, 1993
Publication Information
Publication: Physics of Fluids A
Volume: 5
Issue: 5
ISSN: 0899-8213
Subject Category
Thermodynamics And Statistical Physics
Accession Number
93A39394
Funding Number(s)
CONTRACT_GRANT: AF-AFOSR-90-0232
CONTRACT_GRANT: NAGW-965
Distribution Limits
Public
Copyright
Other

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