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Particle kinetic simulation of high altitude hypervelocity flightIn this grant period, the focus has been on the effects of thermo-chemical nonequilibrium in low-density gases, and on interactions between such gases and solid surfaces. Such conditions apply to hypersonic flows of re-entry vehicles, and to the expansion plumes of small rockets. Due to the nonequilibrium nature of these flows, a particle approach has been adopted. The method continues to undergo refinement and application to typical flows of interest. A number of studies have been performed for flows in thermo-chemical nonequilibrium. The effects of vibrational nonequilibrium on the rate of dissociation were studied for diatomic nitrogen. It was found that a new model reproduced the nonequilibrium behavior observed experimentally.
Document ID
19930007349
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Heinemann, Klaus (Eloret Corp. Sunnyvale, CA, United States)
Boyd, Iain D. (Eloret Corp. Sunnyvale, CA, United States)
Haas, Brian L. (Eloret Corp. Sunnyvale, CA, United States)
Date Acquired
September 6, 2013
Publication Date
January 4, 1993
Subject Category
Aerodynamics
Report/Patent Number
NAS 1.26:191628
NASA-CR-191628
Accession Number
93N16538
Funding Number(s)
CONTRACT_GRANT: NCC2-582
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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