Comparison between Density and Velocity Fields in Burst Modulation of a Dielectric-Barrier-Discharge Plasma Actuator
The flow field produced by a dielectric-barrier-discharge plasma actuator using burst modulation was experimentally investigated in quiescent air from two viewpoints: density and vorticity fields. A wide range of burst signal parameters were evaluated using particle-image velocimetry and background-...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Actuators |
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| Online Access: | https://www.mdpi.com/2076-0825/11/11/340 |
| _version_ | 1797466182684508160 |
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| author | Kenta Emori Yutaka Kaneko Hiroyuki Nishida |
| author_facet | Kenta Emori Yutaka Kaneko Hiroyuki Nishida |
| author_sort | Kenta Emori |
| collection | DOAJ |
| description | The flow field produced by a dielectric-barrier-discharge plasma actuator using burst modulation was experimentally investigated in quiescent air from two viewpoints: density and vorticity fields. A wide range of burst signal parameters were evaluated using particle-image velocimetry and background-oriented schlieren measurements. Four types of flow-field patterns were found: Type 1 was a wall jet, similar to continuous operation; Type 2 was a periodical, independent vortex moving along the wall surface; Types 3 and 4 demonstrated a feature wherein the periodic shedding of the vortex pair (primary and secondary vortices) occurred while moving over the surface. While Types 3 and 4 demonstrated a shared feature, they had different density and vorticity structures. The change of the flow-field pattern from Type 1 to Type 4 was triggered by a lower burst frequency and ratio, as well as a higher base frequency. In addition, the vorticity strength and density were strongly negatively correlated and depended on the rate of power consumption to generate one vortex. |
| first_indexed | 2024-03-09T18:32:11Z |
| format | Article |
| id | doaj.art-5cee359f7e0147428bc86dee3512bcb4 |
| institution | Directory Open Access Journal |
| issn | 2076-0825 |
| language | English |
| last_indexed | 2024-03-09T18:32:11Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Actuators |
| spelling | doaj.art-5cee359f7e0147428bc86dee3512bcb42023-11-24T07:24:13ZengMDPI AGActuators2076-08252022-11-01111134010.3390/act11110340Comparison between Density and Velocity Fields in Burst Modulation of a Dielectric-Barrier-Discharge Plasma ActuatorKenta Emori0Yutaka Kaneko1Hiroyuki Nishida2Department of Mechanical Systems Engineering, Tokyo University of Agriculture and Technology, Tokyo 184-8588, JapanDepartment of Mechanical Systems Engineering, Tokyo University of Agriculture and Technology, Tokyo 184-8588, JapanDepartment of Mechanical Systems Engineering, Tokyo University of Agriculture and Technology, Tokyo 184-8588, JapanThe flow field produced by a dielectric-barrier-discharge plasma actuator using burst modulation was experimentally investigated in quiescent air from two viewpoints: density and vorticity fields. A wide range of burst signal parameters were evaluated using particle-image velocimetry and background-oriented schlieren measurements. Four types of flow-field patterns were found: Type 1 was a wall jet, similar to continuous operation; Type 2 was a periodical, independent vortex moving along the wall surface; Types 3 and 4 demonstrated a feature wherein the periodic shedding of the vortex pair (primary and secondary vortices) occurred while moving over the surface. While Types 3 and 4 demonstrated a shared feature, they had different density and vorticity structures. The change of the flow-field pattern from Type 1 to Type 4 was triggered by a lower burst frequency and ratio, as well as a higher base frequency. In addition, the vorticity strength and density were strongly negatively correlated and depended on the rate of power consumption to generate one vortex.https://www.mdpi.com/2076-0825/11/11/340plasma actuatorburst modulationburst-mode actuationdensity fieldvorticity fieldbackground-oriented schlieren |
| spellingShingle | Kenta Emori Yutaka Kaneko Hiroyuki Nishida Comparison between Density and Velocity Fields in Burst Modulation of a Dielectric-Barrier-Discharge Plasma Actuator Actuators plasma actuator burst modulation burst-mode actuation density field vorticity field background-oriented schlieren |
| title | Comparison between Density and Velocity Fields in Burst Modulation of a Dielectric-Barrier-Discharge Plasma Actuator |
| title_full | Comparison between Density and Velocity Fields in Burst Modulation of a Dielectric-Barrier-Discharge Plasma Actuator |
| title_fullStr | Comparison between Density and Velocity Fields in Burst Modulation of a Dielectric-Barrier-Discharge Plasma Actuator |
| title_full_unstemmed | Comparison between Density and Velocity Fields in Burst Modulation of a Dielectric-Barrier-Discharge Plasma Actuator |
| title_short | Comparison between Density and Velocity Fields in Burst Modulation of a Dielectric-Barrier-Discharge Plasma Actuator |
| title_sort | comparison between density and velocity fields in burst modulation of a dielectric barrier discharge plasma actuator |
| topic | plasma actuator burst modulation burst-mode actuation density field vorticity field background-oriented schlieren |
| url | https://www.mdpi.com/2076-0825/11/11/340 |
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