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A shock capturing technique for hypersonic, chemically relaxing flowsA fully coupled, shock capturing technique is presented for chemically reacting flows at high Mach numbers. The technique makes use of a total variation diminishing (TVD) dissipation operator which results in sharp, crisp shocks. The eigenvalues and eigenvectors of the fully coupled system, which includes species conversion equations in addition to the gas dynamics equations, are analytically derived for a general reacting gas. Species production terms for a model dissociating gas are introduced and are included in the algorithm. The convective terms are solved using a first-order TVD scheme while the source terms are solved using a fourth-order Runge-Kutta scheme to enhance stability. Results from one-dimensional numerical experiments are shown for a two species and a three species gas.
Document ID
19860037945
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Eberhardt, S.
(NASA Ames Research Center Moffett Field, CA, United States)
Brown, K.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1986
Subject Category
Aerodynamics
Report/Patent Number
AIAA PAPER 86-0231
Accession Number
86A22683
Distribution Limits
Public
Copyright
Other

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