Three-dimensional Computational Study on a Magnetohydrodynamic Accelerator in Hall Current Neutralized Condition

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The purpose of this study is to clarify effects of three-dimensional phenomena on performance of the Magnetohydrodynamic (MHD) accelerator for the MAPX project at NASA Marshal Space Flight Center. Generally, in a Faraday type of MHD accelerator with segmented electrode, high flow velocity augmentation can be achieved. However, many independent power supplies have to be installed. A diagonal type of MHD accelerator requires only one power supply, and it is hopeful for the practical applications. Hall current neutralized condition was proposed in this study where each electrode pair was linked externally so as to cancel the current caused by the Hall effect. Results showed that the diagonal accelerator with the neutralized condition could achieve an outlet velocity equivalent to that in the Faraday accelerator. The axial velocity augmented from 1235m/s at inlet to 3040m/s at the outlet under the 300Amps of load current. It is found that the neutralized condition was not implemented in a whole of the cross section when there was plasma non-uniformity. The Lorentz force due to the current concentration caused the velocity-overshoot and the secondary flows. This study of the 3-D analysis provided prediction of the plasma behavior in an MHD accelerator channel as prior numerical analysis for the MAPX project carried out at NASA Marshall Space Flight Center.

収録刊行物

  • 電気学会論文誌. A, 基礎・材料・共通部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A, A publication of Fundamentals and Materials Society  

    電気学会論文誌. A, 基礎・材料・共通部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A, A publication of Fundamentals and Materials Society 128(5), 343-349, 2008-05-01 

    The Institute of Electrical Engineers of Japan

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各種コード

  • NII論文ID(NAID)
    10021129850
  • NII書誌ID(NCID)
    AN10136312
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    03854205
  • NDL 記事登録ID
    9496566
  • NDL 雑誌分類
    ZN31(科学技術--電気工学・電気機械工業)
  • NDL 請求記号
    Z16-793
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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