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  4. Influence of hydrodynamic drag model on shear stress in the simulation of magnetorheological fluids
 
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2015
Journal Article
Titel

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

Abstract
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.
Author(s)
Lagger, H.G.
Breinlinger, T.
Korvink, J.G.
Moseler, M.
Renzo, A. di
Maio, F. di
Bierwisch, C.
Zeitschrift
Journal of non-Newtonian fluid mechanics
Project(s)
HPC-EUROPA2
Funder
European Commission EC
DOI
10.1016/j.jnnfm.2015.01.010
File(s)
N-352165.pdf (8.42 MB)
Language
English
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Fraunhofer-Institut für Werkstoffmechanik IWM
Tags
  • discrete element meth...

  • smoothed particle hyd...

  • magnetorheological fl...

  • shear stress

  • numerical simulation

  • drag model

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