Study of a disk mhd generator for nonequilibrium plasma generator (NPG) system

N. Harada, Kazumi Tsunoda

研究成果: Article査読

10 被引用数 (Scopus)

抄録

Design and performance prediction studies of a disk type magnetohydrodynamic (MHD) generator which is applied to the non equilibrium plasma generator (NPG) system have been performed. The main objective of the present study was to find out whether a sufficiently high output performance demonstration is possible with the disk generator which is planned to be used for the NPG-MHD disk pulse power demonstration. A present numerical simulation showed that the original constant height channel could provide not more than 20% of enthalpy extraction because its channel shape could not sustain the working plasma in the stable regime against ionization instability throughout the channel. We concluded that, in order to obtain much higher generator performance, a detailed design of the channel shape was necessary. Design work has also been performed based on the concept that the local electron temperature must be kept at 5000K, i.e. the plasma must be controlled to locate at the center of the stable regime. With the designed channel, enthalpy extraction of up to 40% and output power of 7.2 MW can be successfully expected under the thermal input of 18 MW. In addition, the designed channel requires no major modification of the supersonic nozzle, the inlet swirl vanes and the configuration of the magnet system.

本文言語English
ページ(範囲)493-503
ページ数11
ジャーナルEnergy Conversion and Management
39
5-6
DOI
出版ステータスPublished - 1998

ASJC Scopus subject areas

  • 再生可能エネルギー、持続可能性、環境
  • 原子力エネルギーおよび原子力工学
  • 燃料技術
  • エネルギー工学および電力技術

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