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Conservation equations and physical models for hypersonic air flows in thermal and chemical nonequilibriumThe conservation equations for simulating hypersonic flows in thermal and chemical nonequilibrium and details of the associated physical models are presented. These details include the curve fits used for defining thermodynamic properties of the 11 species air model, curve fits for collision cross sections, expressions for transport properties, the chemical kinetics models, and the vibrational and electronic energy relaxation models. The expressions are formulated in the context of either a two or three temperature model. Greater emphasis is placed on the two temperature model in which it is assumed that the translational and rotational energy models are in equilibrium at the translational temperature, T, and the vibrational, electronic, and electron translational energy modes are in equilibrium at the vibrational temperature, T sub v. The eigenvalues and eigenvectors associated with the Jacobian of the flux vector are also presented in order to accommodate the upwind based numerical solutions of the complete equation set.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Technical Publication (TP)
Peter A. Gnoffo
(Langley Research Center Hampton, Virginia, United States)
Roop N. Gupta
(Scientific Research & Technology, Inc. VA., United States)
Judy L. Shinn
(Langley Research Center Hampton, Virginia, United States)
Date Acquired
September 5, 2013
Publication Date
February 1, 1989
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
NAS 1.60:2867
Accession Number
Funding Number(s)
PROJECT: RTOP 506-40-91-02
Distribution Limits
Work of the US Gov. Public Use Permitted.
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