Abstract
A numerical study of vertical momentum jets and forced plumes issuing to similar receiving media is presented. The complete partial differential equations governing steady, incompressible, turbulent flow are solved in axisymmetric coordinates using finite-difference techniques. Solutions were based on the stream function-vorticity transport approach for a Boussinesq fluid. Buoyant driving forces were coupled to the vorticity equation by a buoyancy transport equation wich included effects of temperature and other constituents. Turbulent transport coefficients were computed iteratively using the Prandt eddy diffusivitiy model. Results for the momentum jet, axial and radial distributions of velocity and concentration, show excellent agreement with published data. Forced plum computations are presented which include similar results for densimetric Froude numbers ranging from 1 to 1000.
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