Simulation of Bidisperse Magnetorheological Fluids

Kittipoomwong, David; Klingenberg, Daniel J.; Ulicny, John C.

doi:10.1142/s0217979202012918

Cited by 14 publications

(8 citation statements)

References 5 publications

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“…Here, F ij 0 is defined in terms of the average diameter due to the continuous particle size distribution. It is a generalization of the parameter r min ¼ ðr i þ r j Þ=2 used by Kittipoomwong et al (2002) for bidisperse particles to a continuous distribution of particle diameters.…”

Section: Interactionsmentioning

confidence: 99%

“…This normalization of the magnetic field differs from the normalization in Klingenberg et al (1989), using the magnetic field strength, and Kittipoomwong et al (2002), using the saturation magnetization as the normalization factor of the magnetic field. This normalization comes from numerical reasons for the inclusion of the thermal force.…”

Section: F Reduced Unitsmentioning

confidence: 99%

“…As a summary, the real and reduced parameters used in the simulations are shown in Table I. As shown in Table I, the reduced parameters used in this work are different from the reduced parameters used in the MR simulation literature [e.g., Klingenberg et al (1989); Kittipoomwong et al (2002)]. r m , M m , and F B are chosen here as fundamental normalization factors of length, mass and force, respectively, due to the inclusion of Brownian motion in the simulation code.…”

Section: F Reduced Unitsmentioning

confidence: 99%

“…If compared to particle-level simulations on monodisperse systems, simulation studies on MR fluids containing dispersed particles with different sizes are very scarce. Furthermore, most of them focus on bidisperse MR fluids where particles having only two different sizes coexist in suspension [Kittipoomwong et al (2002); Kittipoomwong et al (2005); Ekwebelam and See (2009)]. Kittipoomwong et al (2002) reported simulation data on bidisperse MR fluids under shearing flows.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, most of them focus on bidisperse MR fluids where particles having only two different sizes coexist in suspension [Kittipoomwong et al (2002); Kittipoomwong et al (2005); Ekwebelam and See (2009)]. Kittipoomwong et al (2002) reported simulation data on bidisperse MR fluids under shearing flows. They demonstrated that the yield stress of bidisperse suspensions was larger than that of monodisperse suspensions at the same overall particle volume fraction.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Simulations of polydisperse magnetorheological fluids: A structural and kinetic investigation

Fernández-Toledano

Ruiz-López

Hidalgo‐Álvarez

et al. 2015

Journal of Rheology

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A simulation method is proposed to explore the effect of particle size polydispersity in magnetorheology including Brownian motion. The method aims to extend the classical particle-level simulation methodology developed by Klingenberg et al. [J. Chem. Phys. 91, 7888–7895 (1989)] for the case of polydisperse magnetorheological (MR) fluids. The simulation study concerns the aggregation kinetics at rest as well as the rheological behavior under start-up of steady shear and dynamic oscillatory shear tests at increasing strain amplitudes. Results demonstrate that the effect of polydispersity is only relevant at the transition regime between magnetostatic to hydrodynamic control of the suspension structure. The yielding behavior is correlated to the structural characteristics (radial distribution functions, pair correlation functions, and angular connectivities) of the MR fluids before the onset of flow. A more abrupt transition is observed for polydisperse MR fluids because interparticle links are weaker in this case if compared to monodisperse suspensions in spite of the fact that polydisperse MR fluids exhibit a larger connectivity.

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Section: Interactionsmentioning

confidence: 99%

Section: F Reduced Unitsmentioning

confidence: 99%