In
this paper, we report on a miniaturized device that can generate ion wind flow
with very low net charge.
Both
positive and negative ions are simultaneously generated from two sharp
electrodes placed in parallel, connected to a single battery-operated power
source.
The
two-electrode arrangement is sym-metrical, where the electrode creating charged
ions of one polarity also serves as the reference electrode to establish the
electric field required for ion creation by the opposite electrode, and vice
versa.
The
numerical simulation is carried out with programmable open source OpenFOAM,
where the measured current-voltage is applied as boundary condition to simulate
the electrohydrodynamics flow.
The
air flow inside the device is verified by eight hotwires embedded alongside the
downstream channel.
It
was confirmed that the jet flow generated in the channel has a linear
relationship with the square root of the discharge current and its measured
values agree well with simulation.
The
device is robust, ready-to-use and minimal in cost.
These
are important features that can contribute to the development of multi-axis
fluidic inertial sensors, fluidic amplifiers, gas mixing, coupling and
analysis.
The
proposed configuration is beneficial with space constraints and/or where
neutralized discharge process is required, such as iner-tial fluidic units,
circulatory flow heat transfer, electrospun polymer nanofiber to overcome the
intrinsic instability of the process, or the formation of low charged aerosol
for inhalation and deposition of charge particles.
Title:
| Bipolar corona discharge based air flow generation with low net charge | |
| Authors: | Dau, Van Thanh Dinh, Thien Xuan Terebessy, Tibor |
| Keywords: | Electrohydrodynamic Neutralized ion wind Bipolar corona discharge OpenFOAM Parallel pin |
| Issue Date: | 2016 |
| Publisher: | H. : Đại học Quốc gia Hà Nội |
| Citation: | ISIKNOWLEDGE |
| Abstract: | In this paper, we report on a miniaturized device that can generate ion wind flow with very low net charge. Both positive and negative ions are simultaneously generated from two sharp electrodes placed in parallel, connected to a single battery-operated power source. The two-electrode arrangement is sym-metrical, where the electrode creating charged ions of one polarity also serves as the reference electrode to establish the electric field required for ion creation by the opposite electrode, and vice versa. The numerical simulation is carried out with programmable open source OpenFOAM, where the measured current-voltage is applied as boundary condition to simulate the electrohydrodynamics flow. The air flow inside the device is verified by eight hotwires embedded alongside the downstream channel. It was confirmed that the jet flow generated in the channel has a linear relationship with the square root of the discharge current and its measured values agree well with simulation. The device is robust, ready-to-use and minimal in cost. These are important features that can contribute to the development of multi-axis fluidic inertial sensors, fluidic amplifiers, gas mixing, coupling and analysis. The proposed configuration is beneficial with space constraints and/or where neutralized discharge process is required, such as iner-tial fluidic units, circulatory flow heat transfer, electrospun polymer nanofiber to overcome the intrinsic instability of the process, or the formation of low charged aerosol for inhalation and deposition of charge particles. © 2016 Elsevier B.V. All rights reserved |
| Description: | SENSORS AND ACTUATORS A-PHYSICAL Volume: 244 Pages: 146-155 ; TNS06429 |
| URI: | http://repository.vnu.edu.vn/handle/VNU_123/27462 |
| Appears in Collections: | Bài báo của ĐHQGHN trong Web of Science |
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