The Flow, Temperature and Concentration Fields in a Radio-Frequency Argon-Helium Plasma
The Flow, Temperature and Concentration Fields in a Radio-Frequency Argon-Helium Plasma
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射频氩氦等离子体中的流动、温度和浓度场
DOI：
10.1252/jcej.23.389
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
Atushi Kanzawa
中科院分区：
文献类型：
--
作者：
Takayuki Watanabe;K. Yanase;T. Honda;Atushi Kanzawa
对常压下射频氩氦热等离子体进行了数值模拟。用较简单的算法同时求解二维连续性方程、动量方程、能量方程和种方程以及电磁方程。考虑了氩氦混合等离子体的物理性质。用水冷探针测量等离子体速度、温度和浓度。数值计算结果与实验结果吻合较好。结果表明，电磁泵效应引起的向内径向流是存在的。由向内径向流形成的再循环涡在氩氦等离子体中比在氩等离子体中更强。氦浓度在放电区上游分布均匀。
The numerical simulation of an RF argon-helium thermal plasma under atmospheric pressure was performed. The two-dimensional continuity, momentum, energy and species equations along with the electromagnetic equations were solved simultaneously with the SIMPLER algorithm. The physical properties of the argon-helium mixed plasma were taken into account. The plasma velocity, temperature and concentration were measured with a water-cooled probe. The numerical results were in good agreement with the experimental ones. The results demonstrate the existence of an inward radial flow induced by the electromagnetic pumping effect. The recirculating eddy formed by the inward radial flow becomes stronger in an argon-helium plasma than that in an argon plasma. A uniform distribution of helium concentration is obtained upstream from the discharge region.