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

Author:

Priven M.1,Atkinson J. F.2,Bemporad G. A.3,Rubin H.2

Affiliation:

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

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

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

Abstract

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.

Publisher

ASME International

Subject

Mechanical Engineering

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