We
present a simple and efficient airflow generator utilizing the effect of ion
wind by generating simultaneously both the positive and negative ions from two
sharp electrodes mounted parallel to each other.
The
unique bipolar geometrical setup eliminates the effect of space charge by the
high recombination rate of oppositely charged ions.
The
two-electrode arrangement is symmetrical, 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.
Unlike
the conventional setup, with a single electrode generating ion wind with
movement toward the reference electrode, in this configuration the air movement
is parallel to the electrodes, and is directed away from the device.
The
airflow behavior is studied by both experiments and numerical simulation.
The
ion wind speed has a linear relationship with the square root of the discharge
current, U∝
√ I, and its measured values agree well with simulation.
The
characterization of the discharge current–voltage relationship was derived from
mathematical processing in the general form I =b(V−Vo) n .
The
ion wind speed and the current–voltage characteristics depend on the interspace
between the electrodes and the electrode geometry.
An
ion wind speed on the order of ms −1 is created with a microampere discharge
current, resulting in a total net charge of only several femtoampere.
The
proposed configuration is beneficial in minimizing the power consumption of the
system, and in enabling air recirculation for airflow control applications,
cooling applications, propulsion technology, and micropump design, especially
for the applications where neutralized ion wind flow is required
Title:
| Ion Wind Generator Utilizing Bipolar Discharge in Parallel Pin Geometry | |
| Authors: | Dau, Van Thanh Dinh, Thien Xuan Tibor, Terebessy |
| Keywords: | Bipolar corona discharge parallel pin. ion wind electrohydrodynam-ics |
| Issue Date: | 2016 |
| Publisher: | H. : ĐHQGHN |
| Citation: | ISIKNOWLEDGE |
| Abstract: | We present a simple and efficient airflow generator utilizing the effect of ion wind by generating simultaneously both the positive and negative ions from two sharp electrodes mounted parallel to each other. The unique bipolar geometrical setup eliminates the effect of space charge by the high recombination rate of oppositely charged ions. The two-electrode arrangement is symmetrical, 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. Unlike the conventional setup, with a single electrode generating ion wind with movement toward the reference electrode, in this configuration the air movement is parallel to the electrodes, and is directed away from the device. The airflow behavior is studied by both experiments and numerical simulation. The ion wind speed has a linear relationship with the square root of the discharge current, U∝ √ I, and its measured values agree well with simulation. The characterization of the discharge current–voltage relationship was derived from mathematical processing in the general form I =b(V−Vo) n . The ion wind speed and the current–voltage characteristics depend on the interspace between the electrodes and the electrode geometry. An ion wind speed on the order of ms −1 is created with a microampere discharge current, resulting in a total net charge of only several femtoampere. The proposed configuration is beneficial in minimizing the power consumption of the system, and in enabling air recirculation for airflow control applications, cooling applications, propulsion technology, and micropump design, especially for the applications where neutralized ion wind flow is required |
| Description: | TNS06296 ; IEEE TRANSACTIONS ON PLASMA SCIENCE Volume: 44 Issue: 12 Special Issue: SI Pages: 2979-2987 |
| URI: | http://repository.vnu.edu.vn/handle/VNU_123/25859 |
| Appears in Collections: | Bài báo của ĐHQGHN trong Web of Science |
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