Three-Dimensional Unsteady Electromagnetic Thermal Fluid Simulation on Movement and Disappearance of Multiple Cathode Spots in Vacuum Arc

カテゴリ: 研究会(論文単位)

論文No: EPP20078,SA20090,SP20020

グループ名: 【A】基礎・材料・共通部門 放電・プラズマ・パルスパワー/【B】電力・エネルギー部門 静止器/【B】電力・エネルギー部門 開閉保護合同研究会

発行日: 2020/09/28

タイトル(英語): Three-Dimensional Unsteady Electromagnetic Thermal Fluid Simulation on Movement and Disappearance of Multiple Cathode Spots in Vacuum Arc

著者名: Masahiro Takagi(Tokyo City University),Yusuke Nemoto(Tokyo City University),Yuki Suzuki(Tokyo City University),Zhenwei Ren(Tokyo City University),Yoshifumi Maeda(Tokyo City University),Reggie C. Gustilo(De La Salle University),Toru Iwao(Tokyo City Univers

著者名(英語): Takagi Masahiro(Tokyo City University),Nemoto Yusuke(Tokyo City University),Suzuki Yuki(Tokyo City University),Ren Zhenwei(Tokyo City University),Maeda Yoshifumi(Tokyo City University),Gustilo Reggie C.(De La Salle University),Iwao Toru(Tokyo City Univers

キーワード: ｖａｃｕｕｍ　ａｒｃ|ｍｕｌｔｉｐｌｅ　ｃａｔｈｏｄｅ　ｓｐｏｔｓ|ｍｅｔａｌ　ｖａｐｏｒ|ｅｘｔｅｒｎａｌ　ｍａｇｎｅｔｉｃ　ｆｉｅｌｄ|ｕｎｓｔｅａｄｙ　ａｎａｌｙｓｉｓ|vacuum arc|multiple cathode spots|metal vapor|external magnetic field|unsteady analysis

要約(日本語): Vacuum arc is expected to apply industry application such as vacuum circuit breaker. It has been reported that multiple cathode spots in vacuum arc moves on cathode surface at high speed with occurrence and disappearance affected by interaction each other

要約(英語): Vacuum arc is expected to apply industry application such as vacuum circuit breaker. It has been reported that multiple cathode spots in vacuum arc moves on cathode surface at high speed with occurrence and disappearance affected by interaction each other._x000D_ However, these phenomena have not been clarified because the vacuum arc is a complex physical phenomenon._x000D_ Therefore, the movement of multiple cathode spots was analyzed by numerical simulation._x000D_ As a result, the high-temperature gas concentrated over one cathode spot while the other cathode spots disappeared over time variation. Applying transverse magnetic field to vacuum arc, calculation results suggested the positive feedback loop which causes concentration of current derived from the biased high temperature gas.

原稿種別: 英語

PDFファイルサイズ: 2,216 Kバイト