Towards the simulation of arbitrarily shaped 3D particles using a homogenised lattice Boltzmann method

被引：27

作者：

Trunk, Robin ^{[1
,2
,3
]}

Marquardt, Jan ^{[1
]}

Thaeter, Gudrun ^{[2
]}

Nirschl, Hermann ^{[1
]}

Krause, Mathias J. ^{[1
,2
,3
]}

机构：

[1] Karlsruhe Inst Technol, Inst Mech Proc Engn & Mech, Karlsruhe, Germany

[2] Karlsruhe Inst Technol, Inst Appl & Numer Math, Karlsruhe, Germany

[3] Karlsruhe Inst Technol, Lattice Boltzmann Res Grp, Karlsruhe, Germany

来源：

COMPUTERS & FLUIDS | 2018年 / 172卷

关键词：

Lattice Boltzmann method; Arbitrarily shaped particle; Sedimentation; Homogenised Lattice Boltzmann method; OpenLB; IMMERSED BOUNDARY METHOD; DISCRETE ELEMENT METHOD; PARTICULATE SUSPENSIONS; NUMERICAL SIMULATIONS; FLUID-FLOWS; PARALLELIZATION; MICROSCALE; EQUATION; ISSUES; MODEL;

D O I：

10.1016/j.compfluid.2018.02.027

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

The homogenised lattice Boltzmann method (HLBM), previously published by Krause et al. is extended for 3D simulations. The presented approach facilitates the simulation of arbitrarily shaped particles, which are automatically constructed from a geometry file, describing the surface. The proposed method relies on a discrete representation of the particle on a homogeneous grid rather than an approximation by a shape which can be described by a simple analytical equation or a combination of such. Results of numerical experiments are presented, validating the construction of the discrete particle representation, the particle dynamics as well as the acting forces. Moreover, an application of the method for the simulation of limestone particles based on geometry data generated from computer tomography scans is showcased. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：621 / 631

页数：11

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