IMECH-IR  > 等离子体与燃烧中心(2009-2011)
Direct Measurement of the Gas Entrainment Into a Turbulent Thermal Plasma Jet
Wang HX; Wei FZ; Meng X(孟显); Chen X; Han DS; Pan WX(潘文霞); Wang, HX, Beijing Univ Aeronaut & Astronaut, Sch Astronaut, Beijing 100191, Peoples R China
Source PublicationPlasma Chemistry and Plasma Processing
2011
Volume31Issue:1Pages:127-138
ISSN0272-4324
AbstractAn experimental study is conducted to investigate the entrainment characteristics of a turbulent thermal plasma jet issuing from a DC arc plasma torch operating at atmospheric pressure. The mass flow rate of the ambient gas entrained into the turbulent plasma jet is directly measured by use of the so-called "porous-wall chamber" technique. It is shown that a large amount of ambient gas is entrained into the turbulent plasma jet. With the increase of the gas mass flow rate at the plasma jet inlet or the plasma torch exit, the mass flow rate of entrained ambient gas almost linearly increases but its ratio to the jet-inlet mass flow rate decreases. The mass flow rate of the entrained gas increases with the increase of the arc current or jet length. It is also found that using different ways to inject the plasma-forming gas into the plasma torch affects the entrainment rate of the turbulent plasma jet. The entrainment rate expression established previously by Ricou and Spalding (J. Fluid Mech. 11: 21, 1961) for the turbulent isothermal jets has been used to correlate the experimental data of the entrainment rates of the turbulent thermal plasma jet, and the entrainment coefficient in the entrainment rate expression is found to be in range from 0.40 to 0.47 for the turbulent thermal plasma jet under study.
KeywordTurbulent Plasma Jet Gas Entrainment Entrainment Rate Measurement Experimental Study Ambient Air High-velocity Argon Laminar Pressure Flow
Subject AreaEngineering ; Physics
DOI10.1007/s11090-010-9274-z
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000286393100009
WOS KeywordAMBIENT AIR ; HIGH-VELOCITY ; ARGON ; LAMINAR ; PRESSURE ; FLOW
WOS Research AreaEngineering ; Physics
WOS SubjectEngineering, Chemical ; Physics, Applied ; Physics, Fluids & Plasmas
Funding OrganizationThis work was supported by the National Natural Science Foundation of China (Grant No. 10772016).
DepartmentLHD应用等离子体力学(CPCR)
Classification二类/Q2
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/44868
Collection等离子体与燃烧中心(2009-2011)
Corresponding AuthorWang, HX, Beijing Univ Aeronaut & Astronaut, Sch Astronaut, Beijing 100191, Peoples R China
Recommended Citation
GB/T 7714
Wang HX,Wei FZ,Meng X,et al. Direct Measurement of the Gas Entrainment Into a Turbulent Thermal Plasma Jet[J]. Plasma Chemistry and Plasma Processing,2011,31(1):127-138.
APA Wang HX.,Wei FZ.,孟显.,Chen X.,Han DS.,...&Wang, HX, Beijing Univ Aeronaut & Astronaut, Sch Astronaut, Beijing 100191, Peoples R China.(2011).Direct Measurement of the Gas Entrainment Into a Turbulent Thermal Plasma Jet.Plasma Chemistry and Plasma Processing,31(1),127-138.
MLA Wang HX,et al."Direct Measurement of the Gas Entrainment Into a Turbulent Thermal Plasma Jet".Plasma Chemistry and Plasma Processing 31.1(2011):127-138.
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