Influence of hydrodynamic drag model on shear stress in the simulation of magnetorheological fluids

被引：29

作者：

Lagger, Hanna G. ^{[1
,2
]}

Breinlinger, Thomas ^{[1
]}

Korvink, Jan G. ^{[3
]}

Moseler, Michael ^{[1
,2
]}

Di Renzo, Alberto ^{[4
]}

Di Maio, Francesco ^{[4
]}

Bierwisch, Claas ^{[1
]}

机构：

[1] Fraunhofer IWM, D-79108 Freiburg, Germany

[2] Univ Freiburg, Inst Phys, D-79104 Freiburg, Germany

[3] Univ Freiburg, Lab Simulat, IMTEK Inst Microsyst Technol, D-79110 Freiburg, Germany

[4] Univ Calabria, Dept Environm & Chem Engn, I-87036 Arcavacata Di Rende, CS, Italy

来源：

JOURNAL OF NON-NEWTONIAN FLUID MECHANICS | 2015年 / 218卷

关键词：

Discrete element method; Smoothed particle hydrodynamics; Magnetorheological fluid; Shear stress; Numerical simulation; Drag model; YIELD-STRESS; FLOW; SUSPENSIONS; EVOLUTION; GAS; DEM; ER;

D O I：

10.1016/j.jnnfm.2015.01.010

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Simulations of magnetorheological fluids are performed with different models for the hydrodynamic drag law. The shear stress predictions from two coupled discrete element - smoothed particle hydrodynamics models with different drag laws are compared to pure discrete element simulations for a wide range of Mason numbers. The discrete element model has a higher computational efficiency but the treatment of the hydrodynamic drag force involves some rough approximations. Based on the results of this study, a criterion is proposed for the applicability of the pure discrete element model in the simulation of sheared magnetorheological suspensions. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：16 / 26

页数：11

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