ディスク形希ガスMHD発電機におけるプラズマ挙動に関する数値的検討

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2024/03/01

タイトル(英語): Numerical Study of Plasma Behavior in a Disk-Shaped Noble Gas MHD Generator

著者名: Ork　Kimsor（東京工業大学工学院），奥野　喜裕（東京工業大学工学院）

著者名(英語): Ork Kimsor (School of Engineering, Tokyo Institute of Technology), Yoshihiro Okuno (School of Engineering, Tokyo Institute of Technology)

キーワード: MHD発電，ディスク形発電機，プラズマ挙動，シードプラズマ，数値シミュレーション　　MHD electrical power generation，disk-shaped generator，plasma behavior，seeded plasma，numerical simulation

要約(英語): Plasma behavior in cesium-seeded argon (Ar/Cs) and xenon-seeded argon (Ar/Xe) disk-shaped MHD generators is compared under almost the same working conditions using r-θ two-dimensional simulation. For both working gases, uniform plasma occurs at the optimum load resistance, and the power outputs are the same under an identical inlet ionization degree. For Ar/Cs, plasma is stable and uniform in the range of electron temperature of 4300~5800 K basically according to the linear perturbation theory. In the actual plasma in MHD generator, however, the uniform plasma still can be maintained even at higher electron temperature due to the low three-body recombination coefficient of Ar. For Ar/Xe, on the other hand, uniform plasma is maintained when the characteristic time of the electron number density is longer than the residence time of the working gas where the electron temperature is around 4300~8600 K, even though unstable plasma is suggested from the linear perturbation theory.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.144 No.3 （2024）

本誌掲載ページ: 105-110 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/144/3/144_105/_article/-char/ja/