Title: Fictitious domain method combined with the DEM for studying particle-particle/particle-wall collision in fluid

Authors: Shengli Ma; Zhengying Wei; Xueli Chen; Qiyin Lin

Addresses: Xi'an University of Architecture and Technology, No. 13, Yanta Road, Beilin District, Xi'an, Shaanxi, China ' Key Laboratory of Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, China; School of Mechanical Engineering, Xi'an Jiaotong University, No. 28 Xianning West Road, Xi'an, Shaanxi, China ' Key Laboratory of Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, China; School of Mechanical Engineering, Xi'an Jiaotong University, No. 28 Xianning West Road, Xi'an, Shaanxi, China ' Key Laboratory of Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, China; School of Mechanical Engineering, Xi'an Jiaotong University, No. 28 Xianning West Road, Xi'an, Shaanxi, China

Abstract: The interaction between particles and a fluid is very important in many fields. The hydrodynamic characteristics of both spheroidal particles and non-spherical particles sediment in the fluid and their rebound dynamics were investigated by using the fictitious domain method-discrete element method (FDM-DEM) in this paper. The novelty lies in the combination of the Monte Carlo scheme with FDM to improve the accuracy of hydrodynamic force. A soft-sphere scheme of DEM is used to model the collision of particles. The hydrodynamic force on the particle is fully resolved by the FDM. The numerical results of spherical particle are verified by comparing the previous numerical and experimental results implemented by Cate. The results of non-spherical particles sediment show that the path instability occurs. Those results are in good agreement with the corresponding published data. The method presented in this paper can be used in practical applications.

Keywords: fictitious domain method; FDM; particle-wall collision; particle-laden flow; discrete element method; DEM.

DOI: 10.1504/PCFD.2019.098481

Progress in Computational Fluid Dynamics, An International Journal, 2019 Vol.19 No.2, pp.80 - 97

Received: 27 Dec 2016
Accepted: 24 Nov 2017
Published online: 25 Mar 2019 *

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