Study on EHD pump with multi-holes electrode

Tsukiji, Tetsuhiro; Hamada, Keitaro

doi:10.3233/jae-162054

Cited by 3 publications

(1 citation statement)

References 2 publications

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“…For such a geometry, the total circumference length of the edge of the holes in the electrode that generates the rotational flow is small, resulting in a small one-directional flow velocity. Therefor the multi-holes electrodes were developed to increase the circumference length [3] [4]. However, it has not been lead to practical use yet.…”

Section: Extended Abstractmentioning

confidence: 99%

Application of the EHD Flow to a Pump

Tsukiji¹,

Tajima²,

Suzuki³

2018

World Congress on Mechanical, Chemical, and Material Engineering

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Section: Extended Abstractmentioning

confidence: 99%

Application of the EHD Flow to a Pump

Tsukiji¹,

Tajima²,

Suzuki³

2018

World Congress on Mechanical, Chemical, and Material Engineering

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Simple in fabrication and high-performance electrohydrodynamic pump

2022

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One of the most promising applications of electrohydrodynamic (EHD) pumps occurs at the microscopic scale. However, microscopic dimensions do not always imply microscopic characteristics, and stringent requirements are sometimes imposed on the values of certain variables-for instance, a flow rate of the order of 10 ml/s and a pumping pressure of 100 kPa. This study proposes an EHD pump system based on a holed metal-clad insulation barrier pair that generates high-performance characteristics. A feature of the system is the focusing of electric field lines inside the holes, which increases the electric field strength and activates charge formation processes. Dodecane with 10% Span 85 was used as the working dielectric liquid with conductivity 8 × 10−9 S/m. The Onsager effect is believed to be the dominant charge formation mechanism in the pump with some injection contribution. We measured the characteristics of the electric current (curves of current-voltage and current-time) as well as the performance-related characteristics of the pump in experiments (curves of pressure-voltage and flow rate-pressure at different voltages). The scalability of the flow rate of the proposed EHD pump was investigated by comparing single-hole and nine-hole configurations. As a result, a nonlinear growth of the pump performance on the number of holes was obtained, with the distance between the holes comparable to the interelectrode gap. The estimated flow rate and pressure for the proposed modulus EHD pump with dimensions of 1 cm3 can reach values of 82 ml/s and 620 kPa.

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A Pump using EHD Fluid

Tsukiji

Hamada

Shimizu

2019

JFPS International Journal of Fluid Power System

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One of an electrohydrodynamics (EHD) phenomenon is the induced flow of an EHD fluid in the presence of an electric field. In this paper, we describe a small pump in which the flow is generated by such an EHD phenomenon. In the case of pumps based on cylindrical electrodes, which thus far have been the focus of our research on EHD pumps, the total circumference length of the edge of the holes in the electrode that generates the rotational flow is small, leading to a small overall one-directional flow velocity. To investigate the influence of the total circumference length of the edge of the holes in the electrode, the area of the holes and the electric field intensity on pressure-flow rate characteristics, we produced ten different electrode pumps in which the electrode contains multiple holes. We measured the pressure-flow rate characteristics of our pumps and compared their performances.

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Study on EHD pump with multi-holes electrode

Cited by 3 publications

References 2 publications

Application of the EHD Flow to a Pump

Application of the EHD Flow to a Pump

Simple in fabrication and high-performance electrohydrodynamic pump

A Pump using EHD Fluid

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