THEORETICAL-STUDY OF A LAMINAR JET IN A DOUBLE-DIFFUSION ENVIRONMENT

The flow field development associated with the injection of negatively , neutrally, and positively buoyant fluid layers into a stratified env ironment was analyzed in this study. The analysis considered two-dimen sional (horizontal slot) fluid injection under laminar conditions in e ither temperature-stratified, salinity-stratified or double-diffusive stratified environments. The major features characterizing the buoyant layer development were identified. A numerical model, which integrate s in a local reference frame the equations governing mass, momentum, h eat and salinity fluxes, was developed. The model was used to examine the characteristic flow patterns for the two-dimensional buoyant disch arges of interest in this study. It was also possible to show that dou ble-diffusion effects may significantly influence the development of i nitially neutral fluid layer and cause a certain vertical deviation.