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	Modeling study on the entrainment of ambient air into subsonic laminar and turbulent argon plasma jets
	Wang, Hai-Xing ; Chen, Xi ; Pan, Wenxia
	2010-05-10 ; 2010-05-10
关键词	thermal plasma impinging and free jets jet entrainment modeling ATMOSPHERIC-PRESSURE HEAT-TRANSFER CARRIER-GAS HIGH-VELOCITY FLOW-FIELD LONG GENERATION INJECTION SURFACE SPRAY Engineering, Chemical Physics, Applied Physics, Fluids & Plasmas
中文摘要	Modeling study is performed to reveal the special features of the entrainment of ambient air into subsonic laminar and turbulent argon plasma jets. Two different types of jet flows are considered, i.e., the argon plasma jet is impinging normally upon a flat substrate located in atmospheric air surroundings or is freely issuing into the ambient air. It is found that the existence of the substrate not only changes the plasma temperature, velocity and species concentration distributions in the near-substrate region, but also significantly enhances the mass flow rate of the ambient air entrained into the jet due to the additional contribution to the gas entrainment of the wall jet formed along the substrate surface. The fraction of the additional entrainment of the wall jet in the total entrained-air flow rate is especially high for the laminar impinging plasma jet and for the case with shorter substrate standoff distances. Similarly to the case of cold-gas free jets, the maximum mass flow-rate of ambient gas entrained into the turbulent impinging or free plasma jet is approximately directly proportional to the mass flow rate at the jet inlet. The maximum mass flow-rate of ambient gas entrained into the laminar impinging plasma jet slightly increases with increasing jet-inlet velocity but decreases with increasing jet-inlet temperature.
语种	英语 ; 英语
出版者	SPRINGER ; NEW YORK ; 233 SPRING STREET, NEW YORK, NY 10013 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/23757]
专题	清华大学
推荐引用方式 GB/T 7714	Wang, Hai-Xing,Chen, Xi,Pan, Wenxia. Modeling study on the entrainment of ambient air into subsonic laminar and turbulent argon plasma jets[J],2010, 2010.
APA	Wang, Hai-Xing,Chen, Xi,&Pan, Wenxia.(2010).Modeling study on the entrainment of ambient air into subsonic laminar and turbulent argon plasma jets..
MLA	Wang, Hai-Xing,et al."Modeling study on the entrainment of ambient air into subsonic laminar and turbulent argon plasma jets".(2010).

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