Acceleration and deceleration of a conductive particle within parallel electrodes in viscous fluid

Asano, K.; Choi, C.; Yatsuzuka, K.; Lee, Duch-Chool

doi:10.1109/ceidp.2002.1048766

Cited by 2 publications

(4 citation statements)

References 4 publications

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“…3 In this configuration, an electric force is applied to remove conductive impurities, like carbon particles, from liquefied plastic. 4,5 Also, it has been shown that the motion of a conductive particle in a typical parallel electrode system can be used for measuring the viscosity of fluids. Another interesting potential application of similar configurations is the heat transfer enhancement in fluid flow by the use of micron sized solid particles dispersed in the liquid bulk.…”

Section: Introductionmentioning

confidence: 99%

“…Dascalescu and Mihailescu 1 proposed a mathematical model for motion of a conductive particle exposed to DC corona field of coaxial wire-cylinder electrode system. Asano et al 4 conducted an analytical and experimental study on the acceleration and deceleration of a conductive particle in the DC electric field in a viscous fluid medium. They found a significant disagreement between their experimental data and the theoretical model prediction.…”

Section: Introductionmentioning

confidence: 99%

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Modeling of conductive particle motion in viscous medium affected by an electric field considering particle-electrode interactions and microdischarge phenomenon

2016

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Up and down motion of a spherical conductive particle in dielectric viscous fluid driven by a DC electric field between two parallel electrodes was investigated. A nonlinear differential equation, governing the particle dynamics, was derived, based on Newton's second law of mechanics, and solved numerically. All the pertaining dimensionless groups were extracted. In contrast to similar previous works, hydrodynamic interaction between the particle and the electrodes, as well as image electric forces, has been taken into account. Furthermore, the influence of the microdischarge produced between the electrodes and the approaching particle on the particle dynamics has been included in the model. The model results were compared with experimental data available in the literature, as well as with some additional experimental data obtained through the present study showing very good agreement. The results indicate that the wall hydrodynamic effect and the dielectric liquid ionic conductivity are very dominant factors determining the particle trajectory. A lower bound is derived for the charge transferred to the particle while rebounding from an electrode. It is found that the time and length scales of the post-microdischarge motion of the particle can be as small as microsecond and micrometer, respectively. The model is able to predict the so called settling/dwelling time phenomenon for the first time. Published by AIP Publishing. [http://dx

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modeling of conductive particle motion in viscous medium affected by an electric field considering particle-electrode interactions and microdischarge phenomenon

2016

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“…This method is known as electrostatic fluidization in the literature studied, for instance, by Berkov in 1987 andZhebelev in 1991. In this paper we discuss the use of electric fields as an external agent to force the solid particles to move in a stationary viscous medium. To this end, we exploit the well-known motion of a conductive particle between two flat parallel metal plates under the influence of an electric field (Choi et al, 2001;Asano et al, 2002). Indeed, a single conductive particle becomes charged through induction when placed on an electrode and, for a sufficiently high voltage difference between the plates, the particle lifts off the electrode and moves towards the other electrode.…”

Section: Introductionmentioning

confidence: 99%

“…Choi et al (2000) studied experimentally the motion of a single glassy carbon spherical particle in silicon oil under the uniform electric field between parallel plate electrodes. Asano et al (2002) conducted some careful experiments with millimeter sized glassy carbon and steel spheres in the parallel electrode system. They observed the peculiar behavior in which conductive particles stay on the electrodes for a while after collision.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer Enhancement in a Stagnant Dielectric Liquid by the Up and Down Motion of Conductive Particles Induced by Coulomb Forces

Eslami

Esmaeilzadeh

García-Sánchez

et al. 2017

JAFM

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When charged particles are exposed to an electric field the well-known Coulomb force acts on them. In this investigation, this force is utilized to induce vertical motion of spherical steel particles submerged in a dielectric liquid. The interelectrode space of a two parallel electrode system is filled with the liquid and dispersed steel particles, which become charged after contact with the electrodes. Experiments were carried out to measure the effect of this particle motion on the heat transfer between an electrode surface and an adjacent stagnant dielectric liquid. In order to interpret the experimental data, the dynamics of particles was analytically studied for low particle volume concentrations. Experimental results demonstrate significant heat transfer enhancement on low viscosity dielectric liquids. A detailed discussion is presented on the possible mechanisms responsible for such an enhancement.

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Acceleration and deceleration of a conductive particle within parallel electrodes in viscous fluid

Cited by 2 publications

References 4 publications

Modeling of conductive particle motion in viscous medium affected by an electric field considering particle-electrode interactions and microdischarge phenomenon

Modeling of conductive particle motion in viscous medium affected by an electric field considering particle-electrode interactions and microdischarge phenomenon

Heat Transfer Enhancement in a Stagnant Dielectric Liquid by the Up and Down Motion of Conductive Particles Induced by Coulomb Forces

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