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Analysis of turbulent free-jet hydrogen-air diffusion flames with finite chemical reaction ratesA numerical analysis is presented of the nonequilibrium flow field resulting from the turbulent mixing and combustion of an axisymmetric hydrogen jet in a supersonic parallel ambient air stream. The effective turbulent transport properties are determined by means of a two-equation model of turbulence. The finite-rate chemistry model considers eight elementary reactions among six chemical species: H, O, H2O, OH, O2 and H2. The governing set of nonlinear partial differential equations was solved by using an implicit finite-difference procedure. Radial distributions were obtained at two downstream locations for some important variables affecting the flow development, such as the turbulent kinetic energy and its dissipation rate. The results show that these variables attain their peak values on the axis of symmetry. The computed distribution of velocity, temperature, and mass fractions of the chemical species gives a complete description of the flow field. The numerical predictions were compared with two sets of experimental data. Good qualitative agreement was obtained.
Document ID
19790047603
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Sislian, J. P.
(Toronto Univ. Ontario Canada)
Glass, I. I.
(Toronto, University Toronto, Canada)
Evans, J. S.
(NASA Langley Research Center Hampton, Va., United States)
Date Acquired
August 9, 2013
Publication Date
March 1, 1979
Publication Information
Publication: Canadian Aeronautics and Space Journal
Volume: 25
Subject Category
Inorganic And Physical Chemistry
Accession Number
79A31616
Distribution Limits
Public
Copyright
Other

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