Virtual experimentation through 3D full-loop simulation of a circulating fluidized bed--颗粒学报PARTICUOLOGY

Zhang, N., Lu, B., Wang, W., & Li, J. (2008). Virtual experimentation through 3D full-loop simulation of a circulating fluidized bed. Particuology, 6(6), 529–539. https://doi.org/10.1016/j.partic.2008.07.013

Virtual experimentation through 3D full-loop simulation of a circulating fluidized bed

Nan Zhang ^{a b}, Bona Lu ^{a b}, Wei Wang ^a *, Jinghai Li ^a

a State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
b Graduate University of the Chinese Academy of Sciences, Beijing 100049, China

10.1016/j.partic.2008.07.013

Volume 6, Issue 6, December 2008, Pages 529-539

Received 1 June 2007, Accepted 15 July 2008, Available online 18 November 2008.

E-mail: wangwei@home.ipe.ac.cn

Highlights

Abstract

Eulerian granular multiphase model with a drag coefficient correction based on the energy-minimization multi-scale (EMMS) model was used to simulate a semi-industry scale circulating fluidized bed (CFB). Three-dimensional (3D), time-dependent simulation of a full-loop CFB revealed that the axial profiles of cross-sectionally averaged solid volume fraction, and the radial profiles of solid axial velocity and solid volume fraction were in reasonable agreement with experimental data. Based on this agreement, database derived from experiments not yet accomplished was replenished with such simulations, and fluid regime diagrams and pressure balance around the CFB loop were derived accordingly. This work presents an integrated viewpoint on CFB and unfolds a fresh paradigm for CFB modeling, which can be expected to help resolve certain issues long in dispute but hard for experiments.

Graphical abstract

Keywords

CFD; Circulating fluidized bed; Multiphase flow; Simulation; Choking; Cluster

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