Theoretical Study of a Laminar Jet in a Double-Diffusion Environment

[+] Author and Article Information
M. Priven

CAMERI-Coastal and Marine Engineering Research Institute, Technion City, Haifa 32000, Israel

J. F. Atkinson, H. Rubin

Department of Civil Engineering, State University of New York at Buffalo, Buffalo, NY 14260

G. A. Bemporad

ISMES Spa, V.le G. Cesare 29, 24100 Bergamo, Italy

J. Fluids Eng 117(3), 341-346 (Sep 01, 1995) (6 pages) doi:10.1115/1.2817267 History: Received October 02, 1993; Revised August 31, 1994; Online December 04, 2007


The flow field development associated with the injection of negatively, neutrally, and positively buoyant fluid layers into a stratified environment was analyzed in this study. The analysis considered two-dimensional (horizontal slot) fluid injection under laminar conditions in either temperature-stratified, salinity-stratified or double-diffusive stratified environments. The major features characterizing the buoyant layer development were identified. A numerical model, which integrates in a local reference frame the equations governing mass, momentum, heat and salinity fluxes, was developed. The model was used to examine the characteristic flow patterns for the two-dimensional buoyant discharges of interest in this study. It was also possible to show that double-diffusion effects may significantly influence the development of initially neutral fluid layers and cause a certain vertical deviation.

Copyright © 1995 by The American Society of Mechanical Engineers
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