Plasma fluctuations in a flow field with a steep increase in static pressure in a closed cycle disk MHD generator

Kazumi Tsunoda, Motofumi Tanaka, Shigeharu Kabashima

Research output: Contribution to journalArticle

Abstract

Plasma fluctuations in a flow field with a steep increase in static pressure in a closed cycle disk magnetohydrodynamic (MHD) generator, caused by varying the pressure at the channel exit, were examined by means of a quasi-one-dimensional numerical simulation. In order to compute the plasma properties at the exit boundary for subsonic flow, the characteristic theory where the effects of the MHD interaction are taken into account was developed. The computational results indicated that the fluctuations of the gas dynamic and electrical properties propagated upstream at a speed of sound relative to the local plasma flow velocity. The time variation of the output Hall voltage due to the application of pressure pulse decreased with time and, finally, the Hall voltage reached almost the same level as that for the steady-state.

Original languageEnglish
Pages (from-to)3009-3016
Number of pages8
JournalNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume63
Issue number613
DOIs
Publication statusPublished - 1997 Jan 1

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ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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