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Solutions of the chemical kinetic equations for initially inhomogeneous mixtures.Following the recent discussions by O'Brien (1971) and Donaldson and Hilst (1972) of the effects of inhomogeneous mixing and turbulent diffusion on simple chemical reaction rates, the present report provides a more extensive analysis of when inhomogeneous mixing has a significant effect on chemical reaction rates. The analysis is then extended to the development of an approximate chemical sub-model which provides much improved predictions of chemical reaction rates over a wide range of inhomogeneities and pathological distributions of the concentrations of the reacting chemical species. In particular, the development of an approximate representation of the third-order correlations of the joint concentration fluctuations permits closure of the chemical sub-model at the level of the second-order moments of these fluctuations and the mean concentrations.
Document ID
19730032059
Document Type
Conference Paper
Authors
Hilst, G. R. (Aeronautical Research Associates of Princeton, Inc. Princeton, N.J., United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1973
Subject Category
CHEMISTRY
Report/Patent Number
AIAA PAPER 73-101
Meeting Information
Aerospace Sciences Meeting(Washington, DC)
Funding Number(s)
CONTRACT_GRANT: NAS1-11433
CONTRACT_GRANT: NAS1-11873
CONTRACT_GRANT: EPA-68-02-0014
Distribution Limits
Public
Copyright
Other