Eventos Anais de eventos
ENCIT 2022
19th Brazilian Congress of Thermal Sciences and Engineering
Numerical simulation of the geometrical parameters influence on uniflow cyclone recirculation zones
Submission Author:
Arthur França Martins , SP
Co-Authors:
Arthur França Martins, Dener Silva de Almeida
Presenter: Dener Silva de Almeida
doi://10.26678/ABCM.ENCIT2022.CIT22-0558
Abstract
There are records of the use of the cyclone in 1885 by DeLaval, when he demonstrated the separation of cream from milk. The operation of this device consists of the partial separation of heterogeneous mixtures through the generation of a turbulent flow. Cyclones are used with many industrial systems such as combustion involved low heat capacity fuels, with system that use large amounts of coal or when the fuel requires a long residence time to complete combustion and flue gas purification. Therefore, the purpose of this article is to present results of numerical simulations through CFD in the RANS approach, using the RNG κ-ε turbulence model with rotation flow dominance in order to evaluate the degree of influence of geometric and/or constructive parameters of the cyclone in the recirculation zone through velocity and pressure profiles. Results show that general trend is reduction of pressure and axial and tangential velocities values reduction with increasing of the cyclone length, that is, the distance to be covered by the fluid presents itself as the preponderant factor in the flow dynamics in the evaluated device.
Keywords
cyclone, CFD, Recirculation Zones
