Numerical prediction of flow hydrodynamics of wet molecular sieve particles in a liquid-fluidized bed--颗粒学报PARTICUOLOGY

Liu, G., Wang, P., Lu, H., Yu, F., Zhang, Y., Wang, S., & Sun, L. (2016). Numerical prediction of flow hydrodynamics of wet molecular sieve particles in a liquid-fluidized bed. Particuology, 25, 42-50. https://doi.org/10.1016/j.partic.2015.01.010

Numerical prediction of flow hydrodynamics of wet molecular sieve particles in a liquid-fluidized bed

Guodong Liu ^{a b *}, Peng Wang ^a, Huilin Lu ^b, Fan Yu ^b, Yanan Zhang ^b, Shuai Wang ^b, Liyan Sun ^b

a School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin, China
b School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, China

10.1016/j.partic.2015.01.010

Volume 25, April 2016, Pages 42-50

Received 24 October 2014, Revised 8 January 2015, Accepted 23 January 2015, Available online 17 July 2015, Version of Record 18 February 2016.

E-mail: gdliu@hit.edu.cn

Highlights

• Local unsteady features of fluidization of wet molecular sieve particles were predicted.

• The solid fraction power spectrum were analyzed.

• Effect of particle restitution coefficient on granular pressure and temperature was obtained.

• Good agreement was achieved between the simulated results and experimental findings.

Abstract

The Eulerian–Eulerian framework was used in the numerical simulation of liquid hydrodynamics and particle motion in liquid-fluidized beds. The kinetic theory of granular flow, which accounts for the viscous drag influence on the interstitial liquid phase, was used in combination with two-fluid models to simulate unsteady liquid–solid two-phase flows. We focus on local unsteady features predicted by the numerical models. The solid fraction power spectrum was analyzed. A typical flow pattern, such as core annular flow and particle back-mixing near the wall region of liquid–solid fluidized beds is obtained from this calculation. Effects of the restitution coefficient of particle–particle collisions on the distribution of granular pressure and temperature are discussed. Good agreement was achieved between the simulated results and experimental findings.

Graphical abstract

Keywords

Liquid–solid fluidized bed; Wet particle collision; Kinetic theory of granular flow; Restitution coefficient

文章导读