Effect of emitting electrode number on the performance of EHD gas pump in a rectangular channel

Zhang, J.; Lai, F. C.

doi:10.1016/j.elstat.2011.06.007

Cited by 67 publications

(31 citation statements)

References 13 publications

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“…8 shows the variation of axial flow velocity along and between the emitting electrodes (i.e., YY and XX axis) in the smalldiameter tube. Since the emitting electrodes are flush mounted on the tube wall, one observes that the velocity near the wall (P6) is considerably higher than that away from the wall (P5) for both cases, which is again consistent with the previous reports [24,25]. Also observed, the velocity along the direction of emitting electrode (YY-axis) is higher than that between the electrodes (XX-axis) for all applied voltages.…”

Section: Experimental Observationsupporting

confidence: 91%

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Flow characteristics of a single stage EHD gas pump in circular tube

Birhane

Lin

Lai

2015

Journal of Electrostatics

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Section: Experimental Observationsupporting

confidence: 91%

“…The effect of number of emitting electrodes on the performance of an EHD gas pump in a square channel has been addressed by Zhang and Lai [24]. Flow characteristics of an EHD gas pump with four emitting pins flush mounted on a circular pipe wall have been studied by Brown and Lai [25].…”

Section: Introductionmentioning

confidence: 99%

Flow characteristics of a single stage EHD gas pump in circular tube

Birhane

Lin

Lai

2015

Journal of Electrostatics

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“…The first was performed to find a boundary condition for ion number density on the corona wire while the second one sought the final solution. Problems involving multiple corona electrodes usually require full 3D solution which also can be obtained by Finite Difference Method as demonstrated in [5].…”

Section: Nomenclaturementioning

confidence: 99%

“…Corona discharge problem, therefore, comes down to solution of equations (1) and (3) with current density given by (5) and appropriate boundary conditions. Relative permittivity of the medium εr, ion mobility µ and diffusivity coefficient of ions D are parameters of the model.…”

Section: Governing Equationsmentioning

confidence: 99%

Numerical modeling of body force induced by corona discharge

Gałek

2017

ZN PRz Mechanika

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The paper presents the theoretical basis and results of numerical modeling of corona discharge phenomenon carried out to determine the value of body force that induces the flow of surrounding fluid. The system of two partial differential equations is solved with the values of electric potential ϕ and space charge density ρq as unknowns. The first equation is of Poisson-type with Laplacian acting on the value of potential and source term dependent on space charge density as well as electric permittivity of the medium. The second equation is current continuity equation, where the current density is composed of charge carrier diffusion term and the term describing their drift in electric field. Particular attention was given to the boundary condition of space charge density due to its indirect nature. Geometry of the problem assumes that positive corona discharge takes place on the sharp edge of the blade-shaped anode while flat grounded plate acts as a cathode. Such configuration enables simplified analysis in 2D Cartesian coordinates assuming that the section plane is sufficiently far from the lateral edges of the blade. The system of equations is solved with MOOSE (Multiphysics Object-Oriented Simulation Environment) Framework released in public domain on GNU LGPL license by Idaho National Laboratory. Presented results include 2D distributions of electric potential, electric field strength, space charge density and body force in air surrounding electrodes.

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“…Various attempts have been made to increase the flow rate and optimization of wind ions such as by modifying the electrode configuration, such as: pin-ring electrode configuration of ion wind generator 9 , parallel wire non-field 10 , wire-rod 11 and pin-mesh with the results of that the obtained EHD flow rate is greater than pin-ring 12 . As for increasing the number of electrodes pin 13,14 multipin-ring electrodes is made in a cylindrical tube.…”

Section: Introductionmentioning

confidence: 99%

Study of EHD Flow Produced by Pin-Dual Ring Concentric Electrodes Generator

Sumariyah¹,

Muhlisin²,

Setiawati³

2014

Proceedings of the 2014 International Conference on Physics and Its Applications

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The aim of this research is study of Electrohydrodynamic (EHD) flow by discharge corona generator with electrodes configuration of Pin-Dual Ring Concentric. We measured the velocity of EHD flow with electrodes configuration of Pin-Dual Ring Concentric and compare the result to Pin-Single Ring electrodes. The pin needle was made by stainless steel with a length of 50 mm and a tip diameter of 0.01 mm. The dual ring electrodes constructed by two metal material connected to each other with diameter of 24 mm and width of 16 mm. The thickness of rings is 2 mm and 3 mm, respectively. Single ring electrode has diameter, width and thickness of 24 mm , 2 mm and 3 mm, respectively. The EHD was generated by using a DC high voltage of 10 kV. The Pin act as an active electrode of corona discharge and concentric rings dual / single ring electrodes act as ions collector and passive electrodes. The velocity of EHD flow was measured by a Hot -Wire Anemometer. We found that the velocity of EHD flow with electrodes configuration of pin-dual ring concentric electrodes is larger than pin-single ring electrode. The velocity of EHD flow for two cases of electrodes configuration were saturated at the certain spacing of inter-electrodes distance. The maximum velocity of the of EHD flow using electrodes configuration of pin-dual rings concentric was 0,6 m/s at a distance of inter-electrodes distance 6 mm and a voltage of 3,2 kV.

show abstract

Effect of emitting electrode number on the performance of EHD gas pump in a rectangular channel

Cited by 67 publications

References 13 publications

Flow characteristics of a single stage EHD gas pump in circular tube

Flow characteristics of a single stage EHD gas pump in circular tube

Numerical modeling of body force induced by corona discharge

Study of EHD Flow Produced by Pin-Dual Ring Concentric Electrodes Generator

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