The Viscosity of Polarized Dielectrics

Duff, A. Wilmer

doi:10.1103/physrevseriesi.4.23

Cited by 26 publications

(14 citation statements)

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“…The importance of  is elaborated later. 14 We note that the above model, as presented in equation (9) induced shear stress is lower than the yield stress and one experiences a plug-like zone, the shear rate experienced in the un-yielded region is comparatively negligible with respect to the yielded regions. This is achieved using the concept of bi-viscosity model, as stated by Barnes [71], in which the rigid like zone is replaced by Newtonian-like flow region with a very high viscosity and a very low shear rate; and the Casson-like model is approximated to the form…”

Section: The Hydrodynamics Of Electrorheological Fluid Flow (Erf)mentioning

confidence: 98%

“…Electrorheological fluid (commonly abbreviated as ERFs) is one such class of 'smart' material which changes its rheological properties in presence of an electric field [1][2][3][4][5][6][7][8]. The so called Electrorheological (ER) effect is primarily manifested in the abrupt change of the apparent viscosity of the fluid [3,[9][10][11][12][13][14][15] by orders of magnitude upon action by an electric field of high strength.…”

Section: Introductionmentioning

confidence: 99%

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Taylor–Couette flow of electrorheological fluids under electrical double layer phenomenon

Dhar¹,

Bandopadhyay²,

Chakraborty³

2015

Journal of Non-Newtonian Fluid Mechanics

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Section: The Hydrodynamics Of Electrorheological Fluid Flow (Erf)mentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Taylor–Couette flow of electrorheological fluids under electrical double layer phenomenon

Dhar¹,

Bandopadhyay²,

Chakraborty³

2015

Journal of Non-Newtonian Fluid Mechanics

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“…The alteration in the rheology of materials in the presence of an electric field has been a subject of keen interest in the areas of theoretical and experimental research, with enormous attention paid to a particular kind of fluid, known as electrorheological fluid (ERF) [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. The term electrorheological (ER) effect, also known as the Winslow effect [17], refers to the abrupt change in the apparent viscosity on the application of an electric field.…”

Section: Introductionmentioning

confidence: 99%

Electro-osmosis of electrorheological fluids

2013

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Electrorheological fluids are suspensions that are characterized by a strong functional dependence of the constitutive behavior of the fluids on the electric field. In this work, we consider electro-osmosis of an electrorheological fluid through a channel where a transverse, nonuniform electric field is spontaneously induced due to the presence of an electric double layer that is manifested due to surface charge density at the channel wall. We reveal a nonlinear interplay between the applied electric field, the induced electric field, and the observed flow profiles, which is fundamentally distinctive from other types of nonlinear electrokinetic effects that have been extensively discussed in the literature, in a sense that here an interaction between the applied electric field, the induced electric field, and the dependence of the rheology on the resultant electric field happens to be the focal source of nonlinearity in the observed phenomena. We analyze the electro-osmotic flow control through the exploitation of a combined nonlinear interplay of the driving electrokinetic forces and the resistive viscous interactions, which gives rise to distinctive flow regimes as compared to those realized in cases of either Newtonian fluids or non-Newtonian fluids having electric-field-independent flow rheology.

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“…Duff [10] discovered that the viscosity of certain fluids, like glycerine or castor oil, exhibited a slight reversible change when an electric field was applied perpendicular to the direction of the flow. Active research on electrorheological fluids (ERFs) started in the 1940s, being worldwide recognized through the pioneering work of W.M.…”

Section: Electrorheological Fluidsmentioning

confidence: 99%

Complex Fluids in Energy Dissipating Systems

Galindo-Rosales

2016

Applied Sciences

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Abstract:The development of engineered systems for energy dissipation (or absorption) during impacts or vibrations is an increasing need in our society, mainly for human protection applications, but also for ensuring the right performance of different sort of devices, facilities or installations. In the last decade, new energy dissipating composites based on the use of certain complex fluids have flourished, due to their non-linear relationship between stress and strain rate depending on the flow/field configuration. This manuscript intends to review the different approaches reported in the literature, analyses the fundamental physics behind them and assess their pros and cons from the perspective of their practical applications.

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The Viscosity of Polarized Dielectrics

Cited by 26 publications

References 0 publications

Taylor–Couette flow of electrorheological fluids under electrical double layer phenomenon

Taylor–Couette flow of electrorheological fluids under electrical double layer phenomenon

Electro-osmosis of electrorheological fluids

Complex Fluids in Energy Dissipating Systems

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