Simulation of structure formation in an electrorheological fluid

Tao, Ruibao; Jiang, Qi

doi:10.1103/physrevlett.73.205

Cited by 155 publications

(88 citation statements)

References 18 publications

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“…Hass [15] performed simulations excluding the Brownian force, and analysed the structure formation from his data. Similar studies were also performed by Tao's group [16,17], and Wang et al [18,19]. Hu et al [20] did simulations by considering the torque on solid particles and, based on a simple model, partly included the two-body hydrodynamic interactions.…”

Section: Introductionmentioning

confidence: 60%

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Dielectric electrorheological fluids: Theory and experiment

Wen

Tam

et al. 2003

Advances in Physics

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Electrorheological (ER) fluids are a class of materials whose rheological properties are controllable by the application of an electric field. A dielectric electrorheological (DER) fluid is the simplest type of ER fluid, in which the material components follow a linear electrostatic response. We review and discuss the progress of the studies on physics of this type of material. A first-principles theory of DER fluids, along with relevant experimental verifications, are presented in some detail. In particular, the properties presented include static equilibrium structure, shear modulus, static yield stress and its variation with applied electric field frequency, and structure-induced dielectric nonlinearity.

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Section: Introductionmentioning

confidence: 60%

“…In fact, it can be derived from (A [14][15][16]. This is the case because the boundary conditions are automatically satisfied by the eigenequation (A 3), since the eigenequation comes from the integral representation of Poisson's equation, which already takes into account the boundary conditions.…”

Section: A2 Spherical Shell Inclusionmentioning

confidence: 99%

Dielectric electrorheological fluids: Theory and experiment

Wen

Tam

et al. 2003

Advances in Physics

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“…Stick-slip during the shearing of ER fluids was ascribed to the reformation of the chain structure [9] in the first place, along with sufficient discussion on the important role of the chain structure to the shear behavior of the ER/MR fluids [10,11]. What should be noted is that the traditional rheological properties of the MR/ER fluids are studied under imposed shear motion in the geometry of co-axial cylinder or two parallel plates with unidirectional shearing or oscillation and smooth surface.…”

Section: Introductionmentioning

confidence: 99%

Effect of Surface Roughness on the Stick-slip Behavior of Magnetic Field Controlled-dipolar Suspensions in Simple Linear Shear Mode

Jiang

Zhang

et al. 2016

MATEC Web Conf.

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Abstract. The effect of surface roughness on the stick-slip motion of Magnetorheological (MR) fluids under a simple linear shear mode has been experimentally reported. The shear stress of the MR fluids could be modulated by the changing of the surface roughness. The rate of energy accumulation and releasing during stick-slip motion changed with respect to the shear plates of different surface roughness. The changing of the stick-slip motion based on the different surface roughness was ascribed to the evolution of internal particle structures when shear motion was applied to the aggregates of the particles exposed to the external magnetic field.

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“…These three stages correspond to the three previously observed periods of stress response and the duration of each stage of structure growth was found to be comparable to the corresponding stages observed in stress measurements. In addition to these experimental observations, a number of simulation studies have been carried out to advance understanding of the rheology and kinetics of structure formation in ER fluids [25][26][27][28][29] .…”

Section: Introductionmentioning

confidence: 99%

Structure evolution in electrorheological fluids flowing through microchannels

2013

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Enhanced knowledge of the transient behavior and characteristics of electrorheological (ER) fluids subject to time dependent electric fields carries the potential to advance the design of fast actuated hydraulic devices. In this study, the dynamic response of electrorheological fluid flows in rectilinear microchannels was investigated experimentally. Using high-speed microscopic imaging, the evolution of particle aggregates in ER fluids subjected to temporally stepwise electric fields was visualized. Nonuniform growth of the particle structures in the channel was observed and correlated to field strength and flow rate. Two competing time scales for structure growth were identified. Guided by experimental observations, we develop a phenomenological model to quantitatively describe and predict the evolution of microscale structures and the concomitant induced pressure gradient.

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Simulation of structure formation in an electrorheological fluid

Cited by 155 publications

References 18 publications

Dielectric electrorheological fluids: Theory and experiment

Dielectric electrorheological fluids: Theory and experiment

Effect of Surface Roughness on the Stick-slip Behavior of Magnetic Field Controlled-dipolar Suspensions in Simple Linear Shear Mode

Structure evolution in electrorheological fluids flowing through microchannels

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