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Momentum Measurement of Induced Flow by DBD Plasma Using PIV

PIV를 이용한 DBD 플라즈마 유도 유동장 운동량의 예측

  • Sohn, Jun Ha (Dept. of Mechatronics Engineering, Chungnam National University) ;
  • Kim, Namhoon (Dept. of Mechatronics Engineering, Chungnam National University) ;
  • Kim, Kyungyeon (Dept. of Mechatronics Engineering, Chungnam National University) ;
  • Furudate, Michiko Ahn (Dept. of Mechatronics Engineering, Chungnam National University)
  • Received : 2019.04.15
  • Accepted : 2019.04.24
  • Published : 2019.04.30

Abstract

Particle image velocimetry is performed in order to analyze flowfield induced by a dielectric barrier discharge plasma actuator. The velocity vector fields are obtained for the two different input voltage conditions; the voltage 3 and 5 kV at the frequency 10 kHz. The obtained flowfields show that the air is accelerated and its speed increase almost linearly over the covered electrode. The amount of momentum induced by the DBD plasma actuator is estimated from the obtained velocity fields, and the estimated values reasonably agree with the previous experiment.

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Fig. 1. Schematic of plasma actuator

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Fig. 2. Schematic of experimental set-up for PIV for flow by plasma actuator

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Fig. 3. Experimental set-up

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Fig. 4. Plasma actuator

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Fig. 5. Typical images of flowfield obtained in the experiment

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Fig. 6. Velocity vector fields obtained in the present study

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Fig. 7. Velocity distribution at various positions on the plasma actuator (5 kV, 10 Hz)

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Fig. 8. Velocity distribution in the vicinity of the plasma actuator surface

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Fig. 9. Comparisons of the momentum induced by plasma actuator

Acknowledgement

Supported by : National Research Foundation of Korea

References

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