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Record 27 of 12454
Interrelated structures of the transport shock and collisional relaxation layer in a multitemperature, multilevel ionized gas
Author and Affiliation:
Vinolo, A. R.
Clarke, J. H.(Brown University, Providence, R.I., United States)
Abstract: The gas dynamic structures of the transport shock and the downstream collisional relaxation layer are evaluated for partially ionized monatomic gases. Elastic and inelastic collisional nonequilibrium effects are taken into consideration. In the microscopic model of the atom, three electronic levels are accounted for. By using an asymptotic technique, the shock morphology is found on a continuum flow basis. This procedure gives two distinct layers in which the nonequilibrium effects to be considered are different. A transport shock appears as the inner solution to an outer collisional relaxation layer. The results show four main interesting points: (1) on structuring the transport shock, ionization and excitation rates must be included in the formulation, since the flow is not frozen with respect to the population of the different electronic levels; (2) an electron temperature precursor appears at the beginning of the transport shock; (3) the collisional layer is rationally reduced to quadrature for special initial conditions, which (4) are obtained from new Rankine-Hugoniot relations for the inner shock.
Publication Date: Oct 01, 1973
Document ID:
19740030715
(Acquired Dec 04, 1995)
Accession Number: 74A13465
Subject Category: THERMODYNAMICS AND COMBUSTION
Document Type: Journal Article
Publication Information: Physics of Fluids; 16; Oct. 197
Publisher Information: United States
Contract/Grant/Task Num: NSF GK-31510
Financial Sponsor: NASA; United States
Description: 10p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ATOMIC COLLISIONS; GAS TRANSPORT; IONIZED GASES; NONEQUILIBRIUM IONIZATION; SHOCK LAYERS; ATOMIC ENERGY LEVELS; GAS TEMPERATURE; MONATOMIC GASES; RANKINE-HUGONIOT RELATION; RELAXATION (MECHANICS)
Imprint And Other Notes: Physics of Fluids, vol. 16, Oct. 1973, p. 1612-1621. Research supported by the European Space Research Organization, Ministry of Education of Spain, and NASA
Miscellaneous Notes: p. 1612-1621. Research supported by the European Space Research Organization, Ministry of Education of Spain, and NAS
Availability Source: Other Sources
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