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slip-boundary equations for multicomponent nonequilibrium airflowEquations are presented for the surface-slip (or jump) values of species concentration, pressure, velocity, and temperature in the low Reynolds number, high-altitude flight regime of a space vehicle. These are obtained from closed-form solutions of the mass, momentum, and energy flux equations by using the Chapman-Enskog velocity distribution function. This function represents a solution of the Boltzmann equation in the Navier-Stokes approximation. The analysis, obtained for nonequilibrium multicomponent airflow, includes the finite-rare surface catalytic recombination and changes in the internal energy during reflection from the surface. Expressions for the various slip quantities have been obtained in a form which can readily be employed in flow-field computations. A consistent set of equations is provided for multicomponent and binary mixtures and single-species gas. An expression is also provided for the finite-rate species-concentration boundary condition for a multicomponent mixture in the absence of slip.
Document ID
19860005060
Document Type
Technical Publication (TP)
Authors
Gupta, R. N.
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Scott, C. D.
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Moss, J. N.
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Date Acquired
September 5, 2013
Publication Date
November 1, 1985
Subject Category
FLUID MECHANICS AND HEAT TRANSFER
Report/Patent Number
L-15952
NAS 1.60:2452
NASA-TP-2452
Funding Number(s)
PROJECT: RTOP 506-51-13-03
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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