Computer modelling of turbulent recirculating flows in engineering applications
Abstract
A numerical computation procedure for solving the partial differential equations governing turbulent flows is presented, with an emphasis on swirling flows. The conservation equations for mass and momentum are defined, noting the inclusion of turbulence characteristics in Reynolds stress terms. A twodimensional turbulence model is used, based on an eddy viscosity concept, with the Reynolds stress described in terms of the mean velocity gradient and the eddy viscosity. The model is used for the flow in a rotary air garbage classifier and the flow in a vortex tube. The flexibility of the technique is demonstrated through variations of the initial flow parameters.
 Publication:

Numerical Methods in Laminar and Turbulent Flow
 Pub Date:
 1981
 Bibcode:
 1981nmlt.proc..363K
 Keywords:

 Computational Fluid Dynamics;
 Computerized Simulation;
 Hilsch Tubes;
 Recirculative Fluid Flow;
 Turbulent Flow;
 Conservation Equations;
 Eddy Viscosity;
 Engineering;
 Finite Difference Theory;
 Partial Differential Equations;
 Reynolds Stress;
 Turbulence Models;
 Two Dimensional Flow;
 Two Dimensional Models;
 Fluid Mechanics and Heat Transfer