Micro fan utilizing ionic wind induced in pin-to-plate discharge system

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Abstract

A preliminary investigation was conducted to clarify fundamental characteristics of a micro fan utilizing ionic wind induced in the pin-to-plate gas discharge field. The fan was consisted of a pin electrode, a plate electrode with a hole and a heated plate under the plate electrode. When high voltage was applied between the electrodes, ionic wind flowed through the hole of the plate electrode toward the heated plate. This paper was focused on optimization of the electrode configuration and the enhancement of cooling effect by experiment and calculation. A numerical calculation was conducted by two steps. The corona discharge field was calculated with the finite element method and ionic wind induced by the migration of ions was calculated with the finite differential method. The experimental investigation deduced that : (1) The flow rate was increased with the increase of the hole diameter and the static pressure was increased with the increase of the plate thickness. (2) A gap-to-hole diameter ratio of 0.8 to 1.1 was found to be an optimal value that gives the highest power and efficiency. (3) The enhancement of the heat transfer coefficients was increased with the increase of the distance between the plate electrode and the heated plate. These experimental results were in good agreement with the calculated results.

Original languageEnglish
Pages (from-to)789-795
Number of pages7
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume73
Issue number3
Publication statusPublished - 2007 Mar

Fingerprint

fans
Fans
Electrodes
electrodes
Discharge (fluid mechanics)
Heat transfer coefficients
static pressure
electric corona
augmentation
gas discharges
heat transfer coefficients
Flow rate
Cooling
high voltages
Finite element method
finite element method
flow velocity
Ions
Electric potential
cooling

Keywords

  • Corona discharge
  • Electrohydrodynamics
  • Electrostatic force
  • Ionic wind

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

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title = "Micro fan utilizing ionic wind induced in pin-to-plate discharge system",
abstract = "A preliminary investigation was conducted to clarify fundamental characteristics of a micro fan utilizing ionic wind induced in the pin-to-plate gas discharge field. The fan was consisted of a pin electrode, a plate electrode with a hole and a heated plate under the plate electrode. When high voltage was applied between the electrodes, ionic wind flowed through the hole of the plate electrode toward the heated plate. This paper was focused on optimization of the electrode configuration and the enhancement of cooling effect by experiment and calculation. A numerical calculation was conducted by two steps. The corona discharge field was calculated with the finite element method and ionic wind induced by the migration of ions was calculated with the finite differential method. The experimental investigation deduced that : (1) The flow rate was increased with the increase of the hole diameter and the static pressure was increased with the increase of the plate thickness. (2) A gap-to-hole diameter ratio of 0.8 to 1.1 was found to be an optimal value that gives the highest power and efficiency. (3) The enhancement of the heat transfer coefficients was increased with the increase of the distance between the plate electrode and the heated plate. These experimental results were in good agreement with the calculated results.",
keywords = "Corona discharge, Electrohydrodynamics, Electrostatic force, Ionic wind",
author = "Shinjiro Umezu and Takehiro Torikai and Hiroyuki Kawamoto",
year = "2007",
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AU - Umezu, Shinjiro

AU - Torikai, Takehiro

AU - Kawamoto, Hiroyuki

PY - 2007/3

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N2 - A preliminary investigation was conducted to clarify fundamental characteristics of a micro fan utilizing ionic wind induced in the pin-to-plate gas discharge field. The fan was consisted of a pin electrode, a plate electrode with a hole and a heated plate under the plate electrode. When high voltage was applied between the electrodes, ionic wind flowed through the hole of the plate electrode toward the heated plate. This paper was focused on optimization of the electrode configuration and the enhancement of cooling effect by experiment and calculation. A numerical calculation was conducted by two steps. The corona discharge field was calculated with the finite element method and ionic wind induced by the migration of ions was calculated with the finite differential method. The experimental investigation deduced that : (1) The flow rate was increased with the increase of the hole diameter and the static pressure was increased with the increase of the plate thickness. (2) A gap-to-hole diameter ratio of 0.8 to 1.1 was found to be an optimal value that gives the highest power and efficiency. (3) The enhancement of the heat transfer coefficients was increased with the increase of the distance between the plate electrode and the heated plate. These experimental results were in good agreement with the calculated results.

AB - A preliminary investigation was conducted to clarify fundamental characteristics of a micro fan utilizing ionic wind induced in the pin-to-plate gas discharge field. The fan was consisted of a pin electrode, a plate electrode with a hole and a heated plate under the plate electrode. When high voltage was applied between the electrodes, ionic wind flowed through the hole of the plate electrode toward the heated plate. This paper was focused on optimization of the electrode configuration and the enhancement of cooling effect by experiment and calculation. A numerical calculation was conducted by two steps. The corona discharge field was calculated with the finite element method and ionic wind induced by the migration of ions was calculated with the finite differential method. The experimental investigation deduced that : (1) The flow rate was increased with the increase of the hole diameter and the static pressure was increased with the increase of the plate thickness. (2) A gap-to-hole diameter ratio of 0.8 to 1.1 was found to be an optimal value that gives the highest power and efficiency. (3) The enhancement of the heat transfer coefficients was increased with the increase of the distance between the plate electrode and the heated plate. These experimental results were in good agreement with the calculated results.

KW - Corona discharge

KW - Electrohydrodynamics

KW - Electrostatic force

KW - Ionic wind

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