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Structures in stratified plane mixing layers and the effects of cross-shear

Atsavapranee, P. and Gharib, M. (1997) Structures in stratified plane mixing layers and the effects of cross-shear. Journal of Fluid Mechanics, 342 . pp. 53-86. ISSN 0022-1120. http://resolver.caltech.edu/CaltechAUTHORS:ATSjfm97

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Abstract

A two-dimensional temporal mixing layer is generated in a stratified tilting tank similar to that used by Thorpe (1968). Extensive flow dynamics visualization is carried out using, for the top and bottom layers, fluids of different densities but of the same index of refraction. The two-dimensional density field is measured with the laser-induced fluorescence technique (LIF). The study examines further the classical problem of the two-dimensional mixing layer and explores the effects of cross-shear on a nominally two-dimensional mixing layer, a situation widespread in complex industrial and natural flows. Cross-shear is another component of shear, in plane with but perpendicular to the main shear of the base flow, generated by tilting the tank around a second axis.


Item Type:Article
Additional Information:"Reprinted with the permission of Cambridge University Press." © 1997 Cambridge University Press. Received 20 September 1995 and in revised form 2 January 1997. Published Online 08 Sep 2000. We sincerely thank Professors A. Roshko, C. D. Winant, P. E. Dimotakis, and A. Leonard for the valuable discussions which contributed a great deal to this work. This work was supported by DARPA grant N00014-91-J-1968.
Subject Keywords:STREAMWISE VORTEX STRUCTURE; DETERMINISTIC MODELS; SPANWISE STRUCTURE; FINITE-AMPLITUDE; REYNOLDS-NUMBER; TURBULENT-FLOW; INSTABILITY; STABILITY; DYNAMICS; VORTICES
Record Number:CaltechAUTHORS:ATSjfm97
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:ATSjfm97
Alternative URL:http://www.journals.cambridge.org/action/displayAbstract?fromPage=online&aid=13489
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:1673
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:10 Feb 2006
Last Modified:26 Dec 2012 08:45

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