Electromagnetic Force and Pressure Affected by Changing Interval of Distance Between Multiple Cathode Spots in Vacuum Arc

カテゴリ: 研究会(論文単位)

論文No: EPP19087

グループ名: 【A】基礎・材料・共通部門 放電・プラズマ・パルスパワー研究会

発行日: 2019/07/24

タイトル(英語): Electromagnetic Force and Pressure Affected by Changing Interval of Distance Between Multiple Cathode Spots in Vacuum Arc

著者名: Masahiro Takagi(Tokyo City University),Soshi Iwata(Tokyo City University),Yusuke Nemoto(Tokyo City University),Yoshifumi Maeda(Tokyo City University),Toru Iwao(Tokyo City University)

著者名(英語): Takagi Masahiro(Tokyo City University),Iwata Soshi(Tokyo City University),Nemoto Yusuke(Tokyo City University),Maeda Yoshifumi(Tokyo City University),Iwao Toru(Tokyo City University)

キーワード: ｎｕｍｅｒｉｃａｌ　ｓｉｍｕｌａｔｉｏｎ|ｍｕｌｔｉｐｌｅ　ｃａｔｈｏｄｅ　ｓｐｏｔ|ｅｌｅｃｔｒｏｍａｇｎｅｔｉｃ　ｆｏｒｃｅ|ｐｒｅｓｓｕｒｅ　ｇｒａｄｉｅｎｔ|ｖａｃｕｕｍ　ａｒｃ|numerical simulation|multiple cathode spots|electromagnetic force|pressure gradient|vacuum arc

要約(日本語): This paper deals with the numerical simulation in order to calculate the electromagnetic force and pressure affected by changing interval of distance between multiple cathode spots in vacuum arc. It is known that the arc discharge of high current generates multiple cathode spots and diffusion on the electrode surface in vacuum. However, the reason of the diffusion of cathode spots on electrode surface has not been elucidated. Therefore, the 3-D electromagnetic thermal fluid simulation is used in order to calculate the electromagnetic force and pressure contributing to multiple cathode spots movement with changing the interval of distance between three cathode spots. As a result, the repulsive force by the electromagnetic force and pressure acted on outer cathode spots and the compressive force acted on a center cathode spot. Also, pressure was dominant more than the electromagnetic force contributing to the movement of outer cathode spots. Therefore, the repulsive force and compressive force acting on multiple cathode spots was suggested.

要約(英語): This paper deals with the numerical simulation in order to calculate the electromagnetic force and pressure affected by changing interval of distance between multiple cathode spots in vacuum arc. It is known that the arc discharge of high current generates multiple cathode spots and diffusion on the electrode surface in vacuum. However, the reason of the diffusion of cathode spots on electrode surface has not been elucidated. Therefore, the 3-D electromagnetic thermal fluid simulation is used in order to calculate the electromagnetic force and pressure contributing to multiple cathode spots movement with changing the interval of distance between three cathode spots. As a result, the repulsive force by the electromagnetic force and pressure acted on outer cathode spots and the compressive force acted on a center cathode spot. Also, pressure was dominant more than the electromagnetic force contributing to the movement of outer cathode spots. Therefore, the repulsive force and compressive force acting on multiple cathode spots was suggested.

原稿種別: 英語

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