NDLI: A comprehensive model to determine the effects of temperature and species fluctuations on reaction rates in turbulent reacting flows (Document No: 19820020700)

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A comprehensive model to determine the effects of temperature and species fluctuations on reaction rates in turbulent reacting flows (Document No: 19820020700)

Content Provider	NASA Technical Reports Server (NTRS)
Author	Goldstein, D. Foy, E. Rowan, G. Chinitz, W.
Copyright Year	1982
Description	The use of probability theory to determine the effects of turbulent fluctuations on reaction rates in turbulent combustion systems is briefly reviewed. Results are presented for the effect of species fluctuations in particular. It is found that turbulent fluctuations of species act to reduce the reaction rates, in contrast with the temperature fluctuations previously determined to increase Arrhenius reaction rate constants. For the temperature fluctuations, a criterion is set forth for determining if, in a given region of a turbulent flow field, the temperature can be expected to exhibit ramp like fluctuations. Using the above results, along with results previously obtained, a model is described for testing the effects of turbulent fluctuations of temperature and species on reaction rates in computer programs dealing with turbulent reacting flows. An alternative model which employs three variable probability density functions (temperature and two species) and is currently being formulated is discussed as well.
File Size	3489001
Page Count	66
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19820020700
Archival Resource Key	ark:/13960/t6062ct31
Language	English
Publisher Date	1982-07-31
Access Restriction	Open
Subject Keyword	Fluid Mechanics And Heat Transfer Turbulent Flow Thermochemistry Temperature Effects Reaction Kinetics Variations Combustion Products Combustion Mathematical Models Chemical Composition Probability Density Functions Computer Programs Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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