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Title:
Hydrodynamic force and torque models for a particle moving near a wall at finite particle Reynolds numbers
Author: Zhou ZD(周志登)1,2; Jin GD(晋国栋)1,2; Tian BL(田宝林)3; Ren J3
Source: INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
Issued Date: 2017-06-01
Volume: 92, Pages:1-19
Abstract: This research work is aimed at proposing models for the hydrodynamic force and torque experienced by a spherical particle moving near a solid wall in a viscous fluid at finite particle Reynolds numbers. Conventional lubrication theory was developed based on the theory of Stokes flow around the particle at vanishing particle Reynolds number. In order to account for the effects of finite particle Reynolds number on the models for hydrodynamic force and torque near a wall, we use four types of simple motions at different particle Reynolds numbers. Using the lattice Boltzmann method and considering the moving boundary conditions, we fully resolve the flow field near the particle and obtain the models for hydrodynamic force and torque as functions of particle Reynolds number and the dimensionless gap between the particle and the wall. The resolution is up to 50 grids per particle diameter. After comparing numerical results of the coefficients with conventional results based on Stokes flow, we propose new models for hydrodynamic force and torque at different particle Reynolds numbers. It is shown that the particle Reynolds number has a significant impact on the models for hydrodynamic force and torque. Furthermore, the models are validated against general motions of a particle and available modeling results from literature. The proposed models could be used as sub-grid scale models where the flows between particle and wall can not be fully resolved, or be used in Lagrangian simulations of particle-laden flows when particles are close to a wall instead of the currently used models for an isolated particle. (C) 2017 Elsevier Ltd. All rights reserved.
Keyword: Models for hydrodynamic force and torque ; Finite particle Reynolds number ; Near-wall effect ; Particle-resolved simulation ; Sub-grid scale model ; Eulerian-Lagrangian simulation
Language: 英语
Indexed Type: SCI ; EI
Corresponding Author: Jin, Guodong
Correspondent Email: gdjin@lnm.imech.ac.cn
DOI: 10.1016/j.ijmultiphaseflow.2017.01.018
DOC Type: Article
WOS Subject: Mechanics
WOS ID: WOS:000400530200001
ISSN: 0301-9322
Funder: National Natural Science Foundation of China 11472277 11232011 Strategic Priority Research Program, CAS XDB22040104 Key Research Program of Frontier Sciences, CAS QYZDJ-SSW-SYS002 Science Challenge Program JCKY2016212A501 973 Program of China 2013CB834100 Natural Science Foundation of Shan-dong Province ZR2011EL035
Department: LNM湍流
Classification: 二类/Q1
First Institution (Yes or Not): True
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/60710
Appears in Collections:非线性力学国家重点实验室_期刊论文

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description.institution: 1.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
3.Inst Appl Phys & Computat Math, Beijing 100088, Peoples R China

Recommended Citation:
Zhou ZD,Jin GD,Tian BL,et al. Hydrodynamic force and torque models for a particle moving near a wall at finite particle Reynolds numbers[J]. INTERNATIONAL JOURNAL OF MULTIPHASE FLOW,2017-06-01,92:1-19.
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