Experimental study of electrohydrodynamic pumping through conduction phenomenon

Jeong, Seong-Il; Seyed-Yagoobi, J.

doi:10.1016/s0304-3886(02)00058-x

Cited by 89 publications

(15 citation statements)

References 9 publications

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“…In dielectric liquids, space charges (ions) are mainly created by two mechanisms: one is the dissociation and recombination phenomenon [26], the other one is the charge injection [27]. It has been demonstrated that in blade plane geometry the dissociation/recombination phenomenon induces a flow from plane to blade [28][29][30] while liquid flows in the opposite direction when an injection occurs [21,31]. In our experiment there were very few particles accumulated at the very beginning of the test but later on all the particles were attached to the plane which is completely opposite of what was observed for 5 kV.…”

Section: Ac Testmentioning

confidence: 99%

Experimental studies of influence of different electrodes on bridging in contaminated transformer oil

Mahmud

Chen

Golosnoy

et al. 2015

IEEE Trans. Dielect. Electr. Insul.

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Contaminated transformer oil has been tested under non uniform electric fields and the effect of different electrode systems presented in this paper. Three different electric fields were examined i.e. DC, AC and DC biased AC. These experiments revealed that with all the different electrodes arrangements, contaminated particles always formed bridges between electrodes under DC electric field. The bridges were thicker and more particles were attracted with more uniform electric field (spherical electrode) than with a divergent electric field (needle-plane).

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Section: Ac Testmentioning

confidence: 99%

Experimental studies of influence of different electrodes on bridging in contaminated transformer oil

Mahmud

Chen

Golosnoy

et al. 2015

IEEE Trans. Dielect. Electr. Insul.

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“…In dielectric liquid under high voltage, an EDL and the heterocharge layers are formed as shown in Figure 3 [7][8][9]. The EDL consists of the compact layer (the Helmholtz layer) and the diffuse layer.…”

Section: Simulationsmentioning

confidence: 99%

“…The thickness of the diffuse layer depends on a property of dielectric liquids. Under high voltage, the heterocharge layers distribute additionally in outer part of the diffuse layer [7][8][9]. A non-equilibrium state between the ionic dissociation and recombination is induced under high voltage.…”

Section: Simulationsmentioning

confidence: 99%

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Electrochemical Oscillation Model in Electrohydrodynamic Fluid

Abe¹,

Imai²,

Goto³

2013

OJPC

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In electrohydrodynamic phenomena, rhythmic oscillations of current under ac electric fields were observed in dielectric liquid, C 4 F 9 OCH 3 (Abe et al., Jpn. J. Appl. Phys. (2010)). The oscillations of current and static pressure depended extensively on surface conditions of the electrodes, where an electric double layer on the surface of electrodes is sensitive to its smoothness. The characteristic frequency of current was defined by a crossover point on the power spectrum. This is based on non-synchronization with external ac fields above the critical frequency of current. Simulations are carried out using feedback loop including two-dimensional diffusion process. The observed crossover point on the power spectrum is reproducible qualitatively in the simulations.

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“…The currentevoltage (IeV) characteristic of a dielectric liquid is nonlinear and typically shows four regions: (i) Ohmic (ii) low slope quasi-Ohmic (iii) injection and finally (iv) electric breakdown [1] as shown schematically in Fig. 1.…”

Section: Introductionmentioning

confidence: 99%