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arXiv 1301.0650physics.plasm-phphysics.comp-ph
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电弧等离子体炬建模

Arc Plasma Torch Modeling

J. P. Trelles, C. Chazelas, A. Vardelle, J. V. R. Heberlein

摘要:

电弧等离子体炬是各种工业热等离子体工艺的主要部件,包括等离子体喷涂、金属切割和焊接、热等离子体CVD、金属熔化和重熔、废物处理和气体生产。它们是相对简单的装置,其操作意味着复杂的热、化学、电和流体动力学现象。建模可以用来作为一种手段,以更好地了解其操作中涉及的物理过程。本文综述了直流电弧等离子体炬数学模型的主要内容:包括热力学和化学非平衡模型、湍流和辐射输运、热力学和输运性质计算、边界条件和电弧再附着模型。重点介绍了用于等离子喷涂的传统等离子炬,包括热阴极和喷嘴阳极。

英文摘要:

Arc plasma torches are the primary components of various industrial thermal plasma processes involving plasma spraying, metal cutting and welding, thermal plasma CVD, metal melting and remelting, waste treatment and gas production. They are relatively simple devices whose operation implies intricate thermal, chemical, electrical, and fluid dynamics phenomena. Modeling may be used as a means to better understand the physical processes involved in their operation. This paper presents an overview of the main aspects involved in the modeling of DC arc plasma torches: the mathematical models including thermodynamic and chemical non-equilibrium models, turbulent and radiative transport, thermodynamic and transport property calculation, boundary conditions and arc reattachment models. It focuses on the conventional plasma torches used for plasma spraying that include a hot-cathode and a nozzle anode.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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