Simulação numérica de escoamentos gás-sólido em leito fluidizado borbulhante utilizando a teoria cinética dos escoamentos granulares
2009; Linguagem: Inglês
ISSN
2639-6459
Autores Tópico(s)Cyclone Separators and Fluid Dynamics
ResumoMineto, A. T. (2009). Numerical simulation of gas-solid flow in bubbling fluidized bed using the kinetic theory of granular flows. Bauru, 2009. 88 p. Dissertacao (Mestrado) – Faculdade de Engenharia de Bauru, Universidade Estadual Paulista. In the present work is described a mathematical model and numerical simulation of gas-solid flow in the bubbling fluidized bed. It is presented the hydrodynamic model, A, for gas-solid flow considering the Kinetic Theory of Granular Flows. It is used the two fluids Eulerian model where the solid phase stress tensor is modeled considering the friction between the particles and the kinetic theory of granular flows. The code MFIX (Multiphase Flow with Interphase eXchanges) developed in NETL (National Energy Technology Laboratory) is used for numerical simulations. The results are obtained with the compute of the granular temperature using a partial differential equation or an algebraic expression. It was obtained more realistic results when is used a PDE with boundary conditions of the partial slip. A variation in the diameter of the particles (particles in Group B and Group A/B) it is analyzed. It is also concluded that should be added to the code MFIX other physical parameters for simulations with particles of group A/B.
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