On Numerical Simulation of the Hydrodynamics and Mixing of Gas Flows in a Vortex Chamber
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Numerical simulation was carried out in three-dimensional and axisymmetric formulations for the hydrodynamics and mixing of bottom- and tangentially blown air with different temperatures in a cyclone chamber with local supply of tangentially blown air. To calculate vortex flows in the chamber, use was made of the most popular turbulence models k–ε, k–ω, and SA. It has been established that the best correspondence between the results of calculation and experimental data on hydrodynamic parameters (velocity and pressure) and air mixing under nonisothermal conditions is furnished by the k–ε and k–ω models of turbulence. Good agreement of the results of numerical simulation of vortex flows in the indicated chamber in three-dimensional and axisymmetric formulations has been obtained.
Keywordscyclone chamber bubbling bed model of turbulence mixing temperature tangential velocity longitudinal velocity bottom blowing full pressure axisymmetric flow
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