Using DPM on the way to tailored prismatic spouted beds

Spouted beds are used for miscellaneous applications such as drying, granulation, coating of solids and for chemical reactions. The discrete particle model (DPM) is a powerful tool supporting developers to create tailor-made spouted beds for specific process requirements. The limitation of DPM for large-scale simulations, resulting from high computational effort, can be avoided by simulation of rectangular apparatuses of appropriate thickness, since the fluid and particle dynamics are independent in this direction and scale-up can simply be achieved by extending of the apparatus thickness. In this contribution DPM was used to investigate the influence of the gas flow rate, the particle friction coefficient and the geometry basis angle on the particle dynamics in the spouted bed. Spouted beds are applied in various processes in the chemical, pharmaceutical, agricultural and food industry. To investigate the influence of gas flow rate, particle friction coefficient and the geometry basis angle on the particle dynamics in spouted beds, a coupling of discrete element method and computational fluid dynamics was used for modeling. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Subjects

CFD-DEM coupling

Discrete element method

Discrete particle model

Spouted bed

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Using DPM on the way to tailored prismatic spouted beds