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Title
Japanese: 
English:Velocity change of non-transferred arc jet released into water 
Author
Japanese: 赤塚 洋, 川村 隼, 森 伸介, 根津 篤.  
English: Hiroshi Akatsuka, Jun Kawamura, Shinsuke Mori, Atsushi Nezu.  
Language English 
Journal/Book name
Japanese: 
English:Program-book-abstracts of 35th International Conference on Phenomena in Ionized Gases 
Volume, Number, Page         p. 142
Published date July 9, 2023 
Publisher
Japanese: 
English:International Scientific Committee of 35th International Conference on Phenomena in Ionized Gases 
Conference name
Japanese: 
English:35th International Conference on Phenomena in Ionized Gases (ICPIG XXXV) 
Conference site
Japanese:エグモンド・アン・ゼー 
English:Egmond aan Zee 
Official URL https://www.icpig2023.com/home
 
Abstract A non-transferred atmospheric-pressure argon arc jet is ejected into water from an anode nozzle and examined by optical emission spectroscopy measurement to study thermohydraulic characteristics. The plasma temperature dropped sharply at 10–13 mm downstream measured from the nozzle. Since the arc diameter was found to be almost constant, the arc velocity can be traced from the mass-flux conservation. The velocity dropped sharply at the aforementioned region, where its velocity approximately agreed with the sonic velocity in the water. It is considered that energy dissipation occurred near the sonic velocity of water.

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