Lagrangian–Eulerian simulation of slugging fluidized bed--颗粒学报PARTICUOLOGY

Wu, G., Ouyang, J., Yang, B., Li, Q., & Wang, F. (2012). Lagrangian–Eulerian simulation of slugging fluidized bed. Particuology, 10(1), 72–78. https://doi.org/10.1016/j.partic.2011.07.003

Lagrangian–Eulerian simulation of slugging fluidized bed

Guorong Wu ^a, Jie Ouyang ^a *, Binxin Yang ^a, Qiang Li ^a, Fang Wang ^b

a Department of Applied Mathematics, Northwestern Polytechnical University, Xi’an 710129, China
b Department of Applied Mathematics, Taiyuan University of Science and Technology, Taiyuan 030024, China

10.1016/j.partic.2011.07.003

Volume 10, Issue 1, February 2012, Pages 72-78

Received 11 April 2011, Revised 21 June 2011, Accepted 31 July 2011, Available online 10 December 2011.

E-mail: jieouyang@nwpu.edu.cn

Highlights

Abstract

This work studies gas–solid slugging fluidized beds with Type-D particles, using two-dimensional simulations based on discrete element model (DEM). DEM performance is quantitatively validated by two commonly accepted correlations for determining slugging behavior. The voidage profiles simulated with bed height corresponding to Baeyens and Geldart (1974) correlation for onset of slugging demonstrate a transitional flow pattern from free bubbling to slugging. The present calculated values for the maximum slugging bed height are in good agreement with the correlation from Matsen et al. (1969). Simulations show that fluidized beds with Type-D particles can operate in the round-nosed slugging regime and also shows that wall slugs and square-nosed slugs tend to be formed with increase in superficial gas velocity and in bed height, respectively.

Graphical abstract

Keywords

Fluidization; Simulation; Discrete element method; Slug flow

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