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	Modelling Study on the Plasma Flow and Heat Transfer in a Laminar Arc Plasma Torch Operating at Atmospheric and Reduced Pressure
	Wang Haixing ; Chen Xi ; Pan Wenxia
	2010-10-12 ; 2010-10-12
关键词	non-transferred arc torch plasma flow and heat transfer numerical modelling SURFACE JETS AIR Physics, Fluids & Plasmas
中文摘要	A modelling study is performed to investigate the characteristics of both plasma flow and heat transfer of a laminar non-transferred arc argon plasma torch operated at atmospheric and reduced pressure. It is found that the calculated flow fields and temperature distributions are quite similar for both cases at a chamber pressure of 1.0 atm and 0.1 atm. A fully developed flow regime could be achieved in the arc constrictor-tube between the cathode and the anode of the plasma torch at 1.0 atm for all the flow rates covered in this study. However the flow field could not reach the fully developed regime at 0.1 atm with a higher flow rate. The arc-root is always attached to the torch anode surface near the upstream end of the anode, i.e. the abruptly expanded part of the torch channel, which is in consistence with experimental observation. The surrounding gas would be entrained from the torch exit into the torch interior due to a comparatively large inner diameter of the anode channel compared to that of the arc constrictor-tube.
语种	英语 ; 英语
出版者	IOP PUBLISHING LTD ; BRISTOL ; DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/79053]
专题	清华大学
推荐引用方式 GB/T 7714	Wang Haixing,Chen Xi,Pan Wenxia. Modelling Study on the Plasma Flow and Heat Transfer in a Laminar Arc Plasma Torch Operating at Atmospheric and Reduced Pressure[J],2010, 2010.
APA	Wang Haixing,Chen Xi,&Pan Wenxia.(2010).Modelling Study on the Plasma Flow and Heat Transfer in a Laminar Arc Plasma Torch Operating at Atmospheric and Reduced Pressure..
MLA	Wang Haixing,et al."Modelling Study on the Plasma Flow and Heat Transfer in a Laminar Arc Plasma Torch Operating at Atmospheric and Reduced Pressure".(2010).

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