Studies on Fluid-Plasma Interaction Associated with Basic Gas Blast Characteristics based on a High-Order LES Turbulence Model

カテゴリ: 論文誌(論文単位)

グループ名: 【B】電力・エネルギー部門

発行日: 2013/05/01

タイトル(英語): Studies on Fluid-Plasma Interaction Associated with Basic Gas Blast Characteristics based on a High-Order LES Turbulence Model

著者名: Debasish Biswas (Corporate Research and Development Center, Toshiba Corporation), Tomohiko Jimbo (Corporate Research and Development Center, Toshiba Corporation), Keisuke Udagawa (Power Systems Company, Toshiba Corporation), Takeshi Shinkai (Power Systems

著者名(英語): Debasish Biswas (Corporate Research and Development Center, Toshiba Corporation), Tomohiko Jimbo (Corporate Research and Development Center, Toshiba Corporation), Keisuke Udagawa (Power Systems Company, Toshiba Corporation), Takeshi Shinkai (Power Systems Company, Toshiba Corporation), Katsumi Suzuki (Power Systems Company, Toshiba Corporation)

キーワード: fluid-plasma interaction，arc plasma，SF6，CFD，LES，SF6 gas circuit breaker

要約(英語): In reducing the operating energy thermal puffer type gas circuit breaker is very advantageous. However a detail understanding of the basic fluid-plasma interaction phenomena associated with the gas blast characteristics is very much necessary for its efficient design. Therefore the main aim of this research is to study the basic fluid-plasma interaction phenomena based on a High-Order LES (Large Eddy Simulation) turbulence model. The model configuration used in this regard is a converging-diverging type nozzle installed with an anode and a cathode inside to generate thermal arc plasma in the nozzle flow field. Here, the basic physics associated with the reduction of arc diameter due to interaction of supersonic cooler gas with the thermally expanded hot core gas and related heat transfer through turbulent mixing is discussed. The results revealed that as more and more denser cooler gas entrain to the low density hotter core gas the arc region starts growing axially downstream the region of reduced arc diameter. However near the shock location in the nozzle an abrupt change in temperature distribution is observed.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.133 No.5 （2013） 特集：大電流現象の数値シミュレーション技術の新展開

本誌掲載ページ: 417-423 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejpes/133/5/133_417/_article/-char/ja/