Roshko, Anatol (1991) The mixing transition in free shear flows. In: The global geometry of turbulence : impact of nonlinear dynamics. NATO ASI series. Series B, Physics. No.268. Plenum Press , New York, NY, pp. 3-11. ISBN 0306440148. https://resolver.caltech.edu/CaltechAUTHORS:20141201-133432952
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Abstract
The term "mixing transition" denotes an increase in molecular mixedness observed in a shear How which has earlier experienced the conventional (momentum) transition from laminar flow. First defined by Konrad (1976), from measurements of concentration in a free shear layer, the transition has been described and measured by a number of other methods, in particular by flow visualization, by measurement of chemical reaction product and by hot-wire anemometry, in aqueous as well as gaseous flows. In this presentation we review some of the measurements and try to assess what insight they may give on several questions that occur. 1. What is the relation of the mixing transition to Reynolds number and to other events: the momentum transition; vortex pairing; development of streamwise vortex structure? 2. How much does interfacial area increase during the transition? 3. How fast docs this occur? 4. Docs chaotic advection play a role? The answers arc tentative and incomplete.
| Item Type: | Book Section | |||||||||
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| Additional Information: | © 1991 Springer. Much of the experimental work used for reference here was supported by the U. S. Office of Naval Research and the Air Force Office of Scientific Research. Discussions with P. Bernal and R. Breidenthal provided helpful clarifications. | |||||||||
| Group: | GALCIT | |||||||||
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| Series Name: | NATO ASI series. Series B, Physics | |||||||||
| Issue or Number: | 268 | |||||||||
| DOI: | 10.1007/978-1-4615-3750-2_1 | |||||||||
| Record Number: | CaltechAUTHORS:20141201-133432952 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20141201-133432952 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 52234 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | George Porter | |||||||||
| Deposited On: | 01 Dec 2014 21:49 | |||||||||
| Last Modified: | 10 Nov 2021 19:23 |
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