Characteristics of ionic wind in needle-to-ring corona discharge

Ionic wind cooling for electronic elements is a relevant research field. In order to study the cooling performance of ionic wind on a Light Emitting Diode (LED), an ionic wind generator with a needles-ring electrode configuration was set up. A cylindrical heat sink for the heat dissipation of a heating film representing the LED chip was also manufactured. Following this, the effect of the needle number, the distance between the needles and the ring electrode, and the polarity of the corona discharge on the ionic wind velocity were studied. Finally, the optimal distance between the needles and the ring electrode was adopted to attain the maximum wind velocity with different numbers of needles. After this, the ionic wind device was used to cool the heating film at the working power of 10 watts. The surface temperature of the heating film was measured to evaluate the cooling performance of the ionic wind device. The experimental results indicate that the maximum temperature drop in the heating film center reaches 35.6 • C in the five needle-electrode case, which is very effective and can meet the demands of a 10 watts LED heat dissipation.

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“…These factors will eventually lead to an increase in the current. This conclusion is consistent with the results in the literature [26].…”

Section: The Current-voltage Characteristicssupporting

confidence: 94%

Experimental Investigation on Flow and Heat Transfer Characteristics of a Needle-Cylinder Type Ionic Wind Generator for LED Cooling

Kong

Zhang

2018

Energies

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“…Although more and more the phenomenon has been experimentally verified, the theoretical explanation for BB effect remains open and it has been pursued by many researchers. Possible theoretical explanations proposed in the literature for the phenomenon include the Law of Coulomb, electric wind [31,32], Corona effect [33] or fluctuations of the vacuum [34][35][36][37]. However, in the first case, as the internal net resultant force is zero in capacitors, the Law of Coulomb could not theoretically explain the effect.…”

Section: Fig 1: Scheme Of (A) Symmetrical and (B) Asymmetrical Capacmentioning

confidence: 95%

Anomalous Effects from Dipole-Environment Quantum Entanglement

Porcelli¹,

Filho²

2016

IJAERS

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“…18 In a point-to ring corona, Giubbilini also demonstrated that the ion current is inversely proportional to the point-to-ring distance. 18 Some recent studies modify Townsend's quadratic relationship to better describe the ðu À IÞ relationship for different electrode configurations, e.g., point-to-plate, 19,20 pointto-grid, 21 point-to-cylinder, 22 sphere-to-plane, 23 coaxial cylinders, 24,25 wire-cylinder-plate, [26][27][28] point-to-ring, 18,29,30 parallel electrodes, 31 multi-electrodes, 32 and non-uniform electric fields. 33 In propulsion studies, the electrostatic force has been modeled using various hydrodynamic terms, such as body forces 34 or pressure (drag).…”

Section: Introductionmentioning

confidence: 99%

Analytical model of electro-hydrodynamic flow in corona discharge

et al. 2018

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We present an analytical model for electro-hydrodynamic flow that describes the relationship between the corona voltage, electric field, and ion charge density. The interaction between the accelerated ions and the neutral gas molecules is modeled as an external body force in the Navier-Stokes equation. The gas flow characteristics are solved from conservation principles with spectral methods. This multiphysics model is shown to match experimental data for a point-to-ring corona configuration, shedding new insights into mass, charge, and momentum transport phenomena, and can be readily implemented in any numerical simulation.

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Characteristics of ionic wind in needle-to-ring corona discharge

Cited by 73 publications

References 32 publications

Experimental Investigation on Flow and Heat Transfer Characteristics of a Needle-Cylinder Type Ionic Wind Generator for LED Cooling

Experimental Investigation on Flow and Heat Transfer Characteristics of a Needle-Cylinder Type Ionic Wind Generator for LED Cooling

Anomalous Effects from Dipole-Environment Quantum Entanglement

Analytical model of electro-hydrodynamic flow in corona discharge

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