Numerical Study on Compressible Thermofluid Flow inside/outside the Plasma Arc Cutting Torch Using Oxygen and Nitrogen Gas Mixtures

カテゴリ: 研究会(論文単位)

論文No: EPP22106,SP22041,HV22087

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 開閉保護/【B】電力・エネルギー部門 高電圧合同研究会

発行日: 2022/11/18

タイトル(英語): Numerical Study on Compressible Thermofluid Flow inside/outside the Plasma Arc Cutting Torch Using Oxygen and Nitrogen Gas Mixtures

著者名: Matano Tomofumi(Kanazawa University),Tanaka Yasunori(Kanazawa University),Nakano Yusuke(Kanazawa University),Ishijima Tatsuo(Kanazawa University),Takata Nobuhiro(Komatsu Industries Corp.),Yamaguchi Yoshihiro(Komatsu Industries Corp.)

著者名(英語): Tomofumi Matano(Kanazawa University),Yasunori Tanaka(Kanazawa University),Yusuke Nakano(Kanazawa University),Tatsuo Ishijima(Kanazawa University),Nobuhiro Takata(Komatsu Industries Corp.),Yoshihiro Yamaguchi(Komatsu Industries Corp.)

キーワード: Plasma Arc Cutting|N2 addition to O2|thermodynamic and transport properties|temperature distribution|numerical modeling|Plasma Arc Cutting|N2 addition to O2|thermodynamic and transport properties|temperature distribution|numerical modeling

要約(日本語): One of the technical issues in plasma arc cutting is the Hf cathode erosion which arises from the contact between Hf cathode and the high-temperature plasma. We have so far developed a numerical thermofluid model for arc plasma considering the evaporation and transport of Hf cathode vapor inside and outside the torch. In the present work, the effect of nitrogen mixing on oxygen gas was numerically investigated in thermofluid fields in arcs as well as the erosion amount of Hf cathode.

要約(英語): One of the technical issues in plasma arc cutting is the Hf cathode erosion which arises from the contact between Hf cathode and the high-temperature plasma. We have so far developed a numerical thermofluid model for arc plasma considering the evaporation and transport of Hf cathode vapor inside and outside the torch. In the present work, the effect of nitrogen mixing on oxygen gas was numerically investigated in thermofluid fields in arcs as well as the erosion amount of Hf cathode.

本誌: 2022年11月21日-2022年11月22日放電・プラズマ・パルスパワー/開閉保護/高電圧合同研究会-1

本誌掲載ページ: 73-78 p

原稿種別: 英語

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