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Início - ICHMT DL Ano atual Arquivos Comitê executivo Centro Internacional para Transferência de Calor e Massa

Simulation of the gas-particle flow in a cyclone separator

DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.210
pages 194-197

R. V. Salvo
School of Mechanical Engineering, Federal University of Uberlandia, Av. Joao Naves de Avila, 2121 Uberlandia, MG, Brazil

F. J. Souza
School of Mechanical Engineering, Federal University of Uberlandia, Av. Joao Naves de Avila 2121, Campus Santa Monica, 38408100 Uberlandia, Minas Gerais, Brasil

D. A. M. Martins
School of Mechanical Engineering, Federal University of Uberlandia, Av. Joao Naves de Avila, 2121 Uberlandia, MG, Brazil

Resumo

In this work, the particle-gas flow in a small sampling cyclone separator is simulated by means of Large-Eddy Simulations (LES). The Eulerian-Lagrangian approach is used to calculate the fluid flow along with the particle motion. Unlike Reynolds-averaged turbulence models (RANS), LES modeling is advantageous as it does not demand turbulence dispersion models for the particles, which in turn requires parameter tuning that may not be applicable to arbitrary cyclone geometries and operating conditions. The grade efficiencies computed are compared with the experimental ones and shown to be sensitive to Reynolds numbers and geometry variations. It can be concluded that, besides the independence of ad hoc parameters, LES offers a robust, reliable modeling option for such flows.

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