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STUDY OF FUNCTIONAL ENHANCEMENT OF THERMAL PLASMA JET

Research Project

Project/Area Number 09650204
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Fluid engineering
Research InstitutionTOHOKU GAKUIN UNIVERSITY

Principal Investigator

KOIKE Kazuo  TOHOKU GAKUIN UNIVERSITY,DEPARTMENT OF MECHANICAL ENGINEERING,PROFESSOR, 工学部, 教授 (20108575)

Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 1998: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1997: ¥2,300,000 (Direct Cost: ¥2,300,000)
KeywordsTHERMAL PLASMA / FUNCTIONAL FLUID IN THE MAGNETIC FIELD / STRONG MAGNETIC FIELD / SUPERCONDUCTING MAGNET / OPTICAL TEMPERATURE MEASUREMENT / JET / 超伝導磁石 / プラズマ / 機能性流体 / 超伝導コイル / 光学計測 / MHD流れ
Research Abstract

To enhance the functions of thermal plasma flow using strong magnetic field, an experimental study of Argon plasma jet was carried out to examine the influence of the strong magnetic field on the flow behavior. The axial magnetic field was applied to the jet in a vacuum chamber by means of a pair of superconducting coils. Measurements were conducted under a variety of conditions of the distance from the plasma torch to the temperature measurement position, the supply current to the torch and the magnetic field. It is clarified in the present study that the thermal plasma jet is significantly affected by the strong magnetic field. That is, it was indicated from the relative line intensity measurement that the excitation temperature between the coils increases with the strength of magnetic field. This result shows that the strong magnetic field makes the plasma jet compress radially and that, consequently, the jet extends to the downstream region.
The behavior of the plasma jet in the vacuum chamber was also shot through the windows for observation by a digital video camera. It was indicated from the observation that the width of the jet reduces with the application of strong magnetic field and that, consequently, the high temperature region, located in the middle of the jet, is extended to downstream direction. Moreover, the high temperature region in the middle of the jet becomes much brighter with the magnetic field than that without magnetic field.
In addition, the relative spectral response of the present optical system was measured by means of the device for calibration set at the measuring position in the chamber. The results show the same trend as those from a lamp of tungsten filament.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] 小池 和雄: "強磁場下の熱プラズマ噴流" 日本機械学会第76期全国大会講演論文集(III). 283-284 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 紺野 英司: "減圧場のプラズマ噴流に及ぼす磁場の影響" 平成10年度宇宙輸送シンポジウム講演集. 235-238 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Kazuo Koike: "THERMAL PLASMA JET IN STRONG MAGNETIC FIELD" Proceedings of the 3rd ASME/JSME Joint Fluids Engineering Conference. (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Koike et al.: "Thermal Plasma Jet in Strong Magnetic Field" Preprint of the 76th JSME Fall Annual Meeting. III. 283-284 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] E.Konno et al.: "Effect of Strong Magnetic Field on Plasma Jet at a Low Pressure" Print of the Utyu Yusou Symposium(Symposium on Space Transportation). 235-238 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Koike et al.: "Thermal Plasma Jet in Strong Magnetic Field" Proceedings of the 3rd ASME/JSME Joint Fluids Engineering Conference. (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 小池 和雄,紺野 英司,中山 広樹,大島 亮一郎: "強磁場下の熱プラズマ噴流" 日本機械学会第76期全国大会講演論文集(III). NO.98-3. 283-284 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 紺野 英司,小池 和雄,小野 憲文,大島 亮一郎: "減圧場のプラズマ噴流に及ぼす磁場の影響" 平成10年度宇宙輸送シンポジウム講演集. (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Koike,E.Konno,K.Nakayama and R.Oshima: "THERMAL PLASMA JET IN STRONG MAGNETIC FIELD" Proceedings of the 3rd ASME/JSME Joint Fluids Engineering Conference. (1999)

    • Related Report
      1998 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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