The focus of this paper is to study the behavior of systems with continuous particle size distributions over a gas-solid flow in a bubbling fluidized bed. A lognormal distribution with particle-size range between 800 micrometers and 900 micrometers was used to perform numerical simulations to investigate gas bubbles formation for a polydispersed system. Different drag models were used to predict the bubbles. Species segregation for a binary mixture and a monodispersed system were also studied. Discrete Element Method (DEM) simulations were performed using the source code MFIX (“Multiphase Flow with Interphase eXchanges”)  developed at NETL (“National Energy Technology Laboratory”). The bubble size of a single injected bubble depended strongly on gas-particle drag model used. The influence of the gas bubbles in the mixture and segregation was analyzed and discussed. The results were compared with experimental results from the literature and a good agreement were obtained.
Continuous Particle Size Distributions in a Bubbling Fluidized Bed Using Discrete Element Method
- Views Icon Views
- Share Icon Share
- Search Site
de Souza Braun, MP, Caserta, AJ, & Navarro, HA. "Continuous Particle Size Distributions in a Bubbling Fluidized Bed Using Discrete Element Method." Proceedings of the ASME 2012 International Mechanical Engineering Congress and Exposition. Volume 7: Fluids and Heat Transfer, Parts A, B, C, and D. Houston, Texas, USA. November 9–15, 2012. pp. 2475-2484. ASME. https://doi.org/10.1115/IMECE2012-87419
Download citation file: