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

: Lagger, H.G.; Breinlinger, T.; Korvink, J.G.; Moseler, M.; Renzo, A. di; Maio, F. di; Bierwisch, C.

Fulltext urn:nbn:de:0011-n-3521653 (8.4 MByte PDF)
MD5 Fingerprint: 7ba4a55861f35265e58b65dddcd88425
Created on: 13.02.2017

Journal of non-Newtonian fluid mechanics 218 (2015), pp.16-26
ISSN: 0377-0257
ISSN: 0090-5461
European Commission EC
Journal Article, Electronic Publication
Fraunhofer IWM ()
discrete element method; smoothed particle hydrodynamics; magnetorheological fluid; shear stress; numerical simulation; drag model

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.