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A simple model of mixing and chemical reaction in a turbulent shear layer

Broadwell, J. E. and Breidenthal, R. E. (1982) A simple model of mixing and chemical reaction in a turbulent shear layer. Journal of Fluid Mechanics, 125 . pp. 397-410. ISSN 0022-1120. doi:10.1017/S0022112082003401.

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Arguments are presented to show that the concept of gradient diffusion is inapplicable to mixing in turbulent shear layers. A new model is proposed for treating molecular mixing and chemical reaction in such flows at high Reynolds number. It is based upon the experimental observations that revealed the presence of coherent structures and that showed that fluid elements from the two streams are distributed unmixed throughout the layer by large-scale inviscid motions. The model incorporates features of the strained flame model and makes use of the Kolmogorov cascade in scales. Several model predictions differ markedly from those of diffusion models and suggest experiments for testing the two approaches.

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Additional Information:© 1982 Cambridge University Press. Received July 2 1981; Revised May 24 1982. Published Online April 20 2006. This work was supported by Air Force Office of Scientific Research Contract nos. F4962079C-0159 and F4962079C-0020 and by Project Squid under Contract no. N00014-79-C-0365.
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)F4962079C-0159
Air Force Office of Scientific Research (AFOSR)F4962079C-0020
Project SquidN00014-79-C-0365
Record Number:CaltechAUTHORS:20120716-132515749
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:32477
Deposited By: Tony Diaz
Deposited On:16 Jul 2012 22:11
Last Modified:09 Nov 2021 21:27

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