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a review of reaction rates and thermodynamic and transport properties for an 11-species air model for chemical and thermal nonequilibrium calculations to 30000 kReaction rate coefficients and thermodynamic and transport properties are reviewed and supplemented for the 11-species air model which can be used for analyzing flows in chemical and thermal nonequilibrium up to temperatures of 3000 K. Such flows will likely occur around currently planned and future hypersonic vehicles. Guidelines for determining the state of the surrounding environment are provided. Curve fits are given for the various species properties for their efficient computation in flowfield codes. Approximate and more exact formulas are provided for computing the properties of partially ionized air mixtures in a high energy environment. Limitations of the approximate mixing laws are discussed for a mixture of ionized species. An electron number-density correction for the transport properties of the charged species is obtained. This correction has been generally ignored in the literature.
Document ID
19900017748
Document Type
Other - NASA Reference Publication (RP)
Authors
Gupta, Roop N.
(Scientific Research and Technology, Inc., Tabb VA., United States)
Yos, Jerrold M.
(Textron Defense Systems Wilmington, MA., United States)
Thompson, Richard A.
(NASA Langley Research Center Hampton, VA., United States)
Lee, Kam-Pui
(Scientific Research and Technology, Inc., Hampton VA., United States)
Date Acquired
September 6, 2013
Publication Date
August 1, 1990
Subject Category
FLUID MECHANICS AND HEAT TRANSFER
Report/Patent Number
NASA-RP-1232
NAS 1.61:1232
L-16634
Funding Number(s)
PROJECT: RTOP 506-40-91-02
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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