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Visualization of the local ionic wind profile in a DC corona discharge field by laser-induced phosphorescence emission

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Abstract

Experimental visualization for ionic wind motion originated from DC corona discharges in a needle-plate electrode system has been investigated. A vapor-phase biacetyl tracer with laser-induced phosphorescence emission is used for optically characterizing the ionic wind profile. The ionic wind blows the excited biacetyl molecules away in continuing the visible phosphorescence emission for a long radiative lifetime. The captured image with elapsing time from the excitation presents the shifting location of radiative tracer along the ionic wind direction. The experimental results show the ionic wind profile enhanced in the electric field direction corresponding to the corona discharge progress. Especially, the ionic wind near an initiating point of corona discharges is focused as an advantage of this optical technique. The ionic wind velocity along the electrode axis can be obtained at the location close enough to the corona discharge initiation point, and the velocity at 0.5 mm from the discharge point is figured out as 9.3 to 19.2 m/s under the condition of the EHD Reynolds number of 0.95×103 to 2.1×103.

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Authors and Affiliations

  1. Department of Electrical Engineering, Tokai University, 1117 Kitakaname, 259-1292, Hiratsuka, Kanagawa, Japan

    Ohyama R.

  2. Graduate School of Engineering, Tokai University, 1117 Kitakaname, 259-1292, Hiratsuka, Kanagawa, Japan

    Aoyagi K., Kitahara Y. & Ohkubo Y.

Authors
  1. Ohyama R.
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  2. Aoyagi K.
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  3. Kitahara Y.
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  4. Ohkubo Y.
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Additional information

Ryu-ichiro Ohyama: He received his M.Sc.(Eng) in Electrical Engineering in 1988 from Tokai University. He also received his Ph.D. (Eng.) in Electrical Engineering in 1991 from Tokai University. He worked in Department of Engineering Physics, McMaster University as a visiting associate professor in 1999. He works in Electrical Engineering, Tokai University as an associate professor since 1996. His research interests are Quantitative Visualization in Electrohydrodynamically Induced Fluid Flow Field.

Kentaro Aoyagi: He received his B.Sc. (Eng.) in Electrical and Electronic Engineering in 2005 from Tokai University. He is currently studying at Graduate School of Engineering, Tokai University. His research interests are Quantitative Visualization in Electrohydrodynamically Induced Fluid Flow Field.

Yu Kitahara: He received his B.Sc. (Eng.) in Electrical and Electronic Engineering in 2006 from Tokai University. He is currently studying at Graduate School of Engineering, Tokai University. His research interests are Quantitative Visualization in Electrohydrodynamically Induced Fluid Flow Field.

Yoko Ohkubo: She received her B.Sc. (Eng.) in Electrical Engineering in 2003 from Tokai University. She also received her M.Sc. (Eng.) in Electrical Engineering in 2005 from Tokai University. She currently works in Hitachi Co. Her research interests are Quantitative Visualization in Electrohydrodynamically Induced Fluid Flow Field.

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Ohyama, R., Aoyagi, K., Kitahara, Y. et al. Visualization of the local ionic wind profile in a DC corona discharge field by laser-induced phosphorescence emission. J Vis 10, 75–82 (2007). https://doi.org/10.1007/BF03181806

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  • DOI: https://doi.org/10.1007/BF03181806

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