着火促進を目的とした誘電体バリア放電の超音速流における動作特性

  • 松原 慶典
    東北大学大学院工学研究科航空宇宙工学専攻
  • 岡崎 慈
    東北大学大学院工学研究科航空宇宙工学専攻
  • 山本 貴正
    東北大学大学院工学研究科航空宇宙工学専攻
  • 滝田 謙一
    東北大学大学院工学研究科航空宇宙工学専攻

書誌事項

タイトル別名
  • Operation Characteristics of Dielectric Barrier Discharge for Ignition Enhancement in Supersonic Flow
  • チャッカ ソクシン オ モクテキ ト シタ ユウデンタイ バリア ホウデン ノ チョウオンソクリュウ ニ オケル ドウサ トクセイ

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抄録

The authors developed a method to produce nonequilibrium plasma by dielectric barrier discharge (DBD) in supersonic flow and investigated the possibility for using it as an ignition enhancement technique in a high speed engine, such as a scramjet engine. The discharge characteristics were investigated by varying applied voltage and the flow Mach number. It was revealed from direct photographs that the discharges got stronger and the volume got larger as flow Mach number increased. Estimated discharge power indicated that nonequilibrium plasma could be generated by considerably small energy in comparison with thermal plasma such as a plasma jet torch, which is a typical thermal plasma. The emissions from several excited molecules and atoms were confirmed by spectroscopic measurement of the plasma. Ignition delay analysis revealed that the effect of ozone (O3) addition to shorten the ignition delay time of mixture is almost equal to those of O or H radicals.

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