EFFECT OF BOUNDARY CONDITIONS ON THE HYDRODYNAMICS AND HEAT TRANSFER IN FLUIDIZED BEDS SIMULATIONS

EFFECT OF BOUNDARY CONDITIONS ON THE HYDRODYNAMICS AND HEAT TRANSFER IN FLUIDIZED BEDS SIMULATIONS

BISOGNIN, P. C.; FUSCO, J. M.; SOARES, C.

Artigo:

Due to its great industrial application, fluidized beds have been largely studied. With the increase in computational power, researchers started to study these equipments computationally, through CFD (Computational fluid dynamics). This work has the objective to improve fluidized bed simulations by defining the best value of the specularity coefficient, an important parameter related to the boundary condition of the wall. It was found that this parameter not only influences the hydrodynamics of the bed but also the heat transfer coefficient between an immersed heated surface and the bed. Six different specularity coefficients were tested and the results were compared to experimental data. Further studies need to be made in order to verify if the results encountered in this work can be applied in other fluidization states and bed geometries and how other simulation parameters could alter these results.

Due to its great industrial application, fluidized beds have been largely studied. With the increase in computational power, researchers started to study these equipments computationally, through CFD (Computational fluid dynamics). This work has the objective to improve fluidized bed simulations by defining the best value of the specularity coefficient, an important parameter related to the boundary condition of the wall. It was found that this parameter not only influences the hydrodynamics of the bed but also the heat transfer coefficient between an immersed heated surface and the bed. Six different specularity coefficients were tested and the results were compared to experimental data. Further studies need to be made in order to verify if the results encountered in this work can be applied in other fluidization states and bed geometries and how other simulation parameters could alter these results.

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DOI: 10.5151/chemeng-cobeq2014-1854-17204-180083

Referências bibliográficas

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Como citar:

BISOGNIN, P. C.; FUSCO, J. M.; SOARES, C.; "EFFECT OF BOUNDARY CONDITIONS ON THE HYDRODYNAMICS AND HEAT TRANSFER IN FLUIDIZED BEDS SIMULATIONS", p-6329-6336. In: Anais do XX Congresso Brasileiro de Engenharia Química - COBEQ 2014 [= Blucher Chemical Engineering Proceedings, v.1, n.2]. São Paulo: Blucher, 2015.
ISSN 23591757, DOI 10.5151/chemeng-cobeq2014-1854-17204-180083