The calculation of twodimensional buoyant surface jets with the kW model of turbulence
Abstract
A buoyancyextended version of the kW model of turbulence which predicts twodimensional turbulent buoyant surface jets with stable stratification is described. Differential transport equations are solved for the turbulent kinetic energy and the mean square of the vorticity fluctuations. The model uses a modified form of the vorticityfluctuations equation, wherein the dissipation term is made a function of the local flux Richardson number. The algebraicstress/fluxmodel approach is used to account for the reduction of the vertical turbulent transport of heat and momentum by stable stratification. The turbulence model is applied to the calculation of horizontal buoyant surface jets. Results agree with experimental data.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 December 1984
 Bibcode:
 1984STIN...8533448M
 Keywords:

 Buoyancy;
 Jet Flow;
 Kinetic Energy;
 Mathematical Models;
 Turbulence Models;
 Turbulent Flow;
 Two Dimensional Flow;
 Vorticity Equations;
 Differential Equations;
 Laminar Flow;
 Richardson Number;
 Transport Theory;
 Fluid Mechanics and Heat Transfer