| Effect of an axial magnetic field on a DC argon arc |
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| 引用本文： | 黎林村,夏维东. Effect of an axial magnetic field on a DC argon arc[J]. 中国物理 B, 2008, 17(2): 649-654 |
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| 作者姓名： | 黎林村 夏维东 |
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| 作者单位： | Department of Thermal Science & Energy Engineering,University of Science & Technology of China, Hefei 230027, China;Department of Thermal Science & Energy Engineering,University of Science & Technology of China, Hefei 230027, China |
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| 基金项目： | Project supportedby the National Natural Science Foundation of China (Grant Nos10375065 and 10675122). |
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| 摘 要： | In this paper a commercial CFD （computational fluid dynamics） code FLUENT has been used and modified for the axisymmetric swirl and time-dependent simulation of an atmospheric pressure argon arc in an external axial magnetic field （AMF）. The computational domain includes the arc itself and the anodic region. Numerical results demonstrate that the AMF substantially increases the tangential component of the plasma velocity. The resulting centrifugal force for the plasma rotation impels it to travel to the arc mantel and as a result, a low-pressure region appears at the arc core. With the AMF, the arc presents a hollow bell shape and correspondingly, the maximal values of the temperature, pressure and current density on the anode surface are departing from the arc centreline.
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| 关 键 词： | 电弧调制 轴向磁场 氩弧 电磁学 |
| 收稿时间： | 2007-03-21 |
| 修稿时间： | 2007-04-19 |
Effect of an axial magnetic field on a DC argon arc |
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| Li Lin-Cun and Xia Wei-Dong. Effect of an axial magnetic field on a DC argon arc[J]. Chinese Physics B, 2008, 17(2): 649-654 |
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| Authors: | Li Lin-Cun and Xia Wei-Dong |
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| Affiliation: | Department of Thermal Science & Energy Engineering,University of Science & Technology of China, Hefei 230027, China |
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| Abstract: | In this paper a commercial CFD (computational fluid dynamics) codeFLUENT has been used and modified for the axisymmetric swirl andtime-dependent simulation of an atmospheric pressure argon arc in anexternal axial magnetic field (AMF). The computational domainincludes the arc itself and the anodic region. Numerical resultsdemonstrate that the AMF substantially increases the tangentialcomponent of the plasma velocity. The resulting centrifugal force forthe plasma rotation impels it to travel to the arc mantel and as aresult, a low-pressure region appears at the arc core. With the AMF,the arc presents a hollow bell shape and correspondingly, the maximalvalues of the temperature, pressure and current density on the anodesurface are departing from the arc centreline. |
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| Keywords: | arc modeling axial magneticfield FLUENT |
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