Smoothed particle hydrodynamics for coarse-grained modeling of rapid granular flow--颗粒学报PARTICUOLOGY

Deng, L., & Wang, W. (2015). Smoothed particle hydrodynamics for coarse-grained modeling of rapid granular flow. Particuology, 21, 173-178. https://doi.org/10.1016/j.partic.2014.08.012

Smoothed particle hydrodynamics for coarse-grained modeling of rapid granular flow

Lijuan Deng ^a *, Wei Wang ^b

a Department of Chemical Engineering, Ningbo University of Technology, Ningbo 315016, China
b The EMMS Group, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China

10.1016/j.partic.2014.08.012

Volume 21, August 2015, Pages 173-178

Received 12 June 2014, Revised 6 August 2014, Accepted 27 August 2014, Available online 2 January 2015, Version of Record 6 June 2015.

E-mail: ljdeng@nbut.edu.cn; butter_fly01@sina.cn

Highlights

• Viability of SPH in solving continuum equations for the solid phase of two-fluid model was tested.

• Fewer particles were needed when predicting the collective behavior of rapid granular flow.

• Effects of solids pressure and viscous stress were analyzed.

Abstract

We simulated rapid flow in transient plane Couette flows of granular particles using the smoothed particle hydrodynamics (SPH) solutions of a set of continuum equations. This simulation was performed to test the viability of SPH in solving the equations for the solid phase of the two-fluid model associated with fluidization. We found that SPH requires the handling of fewer particles in simulating the collective behavior of rapid granular flow, thereby bolstering expectations of solving the equations for the solid phase in the two-fluid modeling of fluidization. Further work is needed to investigate the effect of terms describing pressure and viscous stress of solids on stability in simulations.

Graphical abstract

Keywords

Smoothed particle hydrodynamics (SPH); Rapid granular flow; Continuum model; Two-fluid model; Elastic modulus; Transient plane Couette flow

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