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|Type:||Artigo de periódico|
|Title:||Model For Airflow In Cyclones|
Maciel Filho R.
|Abstract:||Studies have shown that cyclones may have uses beyond the separation of solids from gas streams. Among its alternative utilization are heat exchanger, drier, combustor and chemical reactor. However, independent of its use, it is important to understand how gases flow inside the cyclone. As a first approximation, it is necessary to understand the fluid dynamics of a gas stream in the absence of solid particles. In the present work, a model is proposed to describe the pattern gas flow inside a cyclone in the absence of solid particles. The model explores the dependence of the tangential component of the velocity of the air on the axial coordinate and on the turbulent effective viscosity. A discretization of the dimensionless model equations is used. The model adopts a variable grid that depends on the radial and axial coordinates. The modified equations are integrated using a numerical procedure coupling the Line Method and a 4th order Runge-Kutta-Gill type integrator. To improve the model's performance, the steps of integration along the axial coordinate are variable due to changes in the discretization of the radial coordinate. In turn, the radial coordinate is discretized by a centrally-modified finite difference procedure.|
|Editor:||ABEQ, Sao Paulo, Brazil|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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