Three-Dimensional Modeling of Heat Transfer and Fluid Flow in Laminar-Plasma Material Re-Melting Processing

doi:10.1016/j.ijheatmasstransfer.2005.11.019

IMECH-IR > 力学所知识产出(1956-2008)

	Three-Dimensional Modeling of Heat Transfer and Fluid Flow in Laminar-Plasma Material Re-Melting Processing
	Wang HX; Cheng K; Chen X; Pan WX(潘文霞); Chen, X (reprint author), Tsing Hua Univ, Dept Engn Mech, Engn Thermophys Div, Beijing 100084, Peoples R China.
发表期刊	International Journal of Heat and Mass Transfer
	2006
卷号	49 期号:13 页码:2254-2264
ISSN	0017-9310
摘要	Modeling study is performed concerning the heat transfer and fluid flow for a laminar argon plasma jet impinging normally upon a flat workpiece exposed to the ambient air. The diffusion of the air into the plasma jet is handled by using the combined-diffusion-coefficient approach. The heat flux density and jet shear stress distributions at the workpiece surface obtained from the plasma jet modeling are then used to study the re-melting process of a carbon steel workpiece. Besides the heat conduction within the workpiece, the effects of the plasma-jet inlet parameters (temperature and velocity), workpiece moving speed, Marangoni convection, natural convection etc. on the re-melting process are considered. The modeling results demonstrate that the shapes and sizes of the molten pool in the workpiece are influenced appreciably by the plasma-jet inlet parameters, workpiece moving speed and Marangoni convection. The jet shear stress manifests its effect at higher plasma-jet inlet velocities, while the natural convection effect can be ignored. The modeling results of the molten pool sizes agree reasonably with available experimental data.
学科领域	力学
DOI	10.1016/j.ijheatmasstransfer.2005.11.019
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000238269800022
关键词[WOS]	ATMOSPHERIC-PRESSURE ; JETS ; LONG ; GAS
WOS研究方向	Thermodynamics ; Engineering ; Mechanics
WOS类目	Thermodynamics ; Engineering, Mechanical ; Mechanics
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/16541
专题	力学所知识产出(1956-2008)
通讯作者	Chen, X (reprint author), Tsing Hua Univ, Dept Engn Mech, Engn Thermophys Div, Beijing 100084, Peoples R China.
推荐引用方式 GB/T 7714	Wang HX,Cheng K,Chen X,et al. Three-Dimensional Modeling of Heat Transfer and Fluid Flow in Laminar-Plasma Material Re-Melting Processing[J]. International Journal of Heat and Mass Transfer,2006,49,13,:2254-2264.
APA	Wang HX,Cheng K,Chen X,潘文霞,&Chen, X .(2006).Three-Dimensional Modeling of Heat Transfer and Fluid Flow in Laminar-Plasma Material Re-Melting Processing.International Journal of Heat and Mass Transfer,49(13),2254-2264.
MLA	Wang HX,et al."Three-Dimensional Modeling of Heat Transfer and Fluid Flow in Laminar-Plasma Material Re-Melting Processing".International Journal of Heat and Mass Transfer 49.13(2006):2254-2264.

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