Numerical simulation of velocity and temperature fields of the argon inductively coupled plasma

doi:10.16568/j.0254-6086.202001005

Abstract

Abstract:

In order to obtain the flow-field properties of the inductively coupled plasma wind tunnel (ICPWT) for the research of the thermal protection system (TPS) of re-entry vehicles, a non-equilibrium numerical model with the coupling of flow-field, electromagnetic-field and chemical-field was established to simulate radio-frequency discharge, Joule heating phenomenon and ionization/dissociation chemical process of an ICP flow. Distribution characteristics of flow velocity and temperature were obtained and analyzed under different inlet mass flow rates and different working pressures. Calculation results show that the velocity on the center line of the plasma torch increases with the increase of the inlet mass flow rate, but decreases with the increase of the working pressure. At the same time, the temperature on the center line of the plasma torch decreases as the inlet mass flow rate increases. However, the temperature decreases first, and then increases as the pressure increases. This research will provide reference for the optimal design of high thermal efficiency ICP torch and guidance for industrial applications of the inductively coupled plasmas.

Key words: Thermal protection system, Mass flow rate, Working pressure, Flow characteristics

摘要：

为了获得用于研究再入飞行器热防护系统的感应耦合等离子体风洞流场数据，基于流场、电磁场和化学场的多场耦合建立了非平衡态感应耦合等离子体数值模型。利用该模型对不同入口质量流率和不同工作压力下的感应耦合等离子体进行了数值模拟，得到了相应工作参数下感应耦合等离子体温度与速度的分布特性。计算结果表明：等离子体中心线上的速度随着入口质量流率的增大而增大，而随着工作压力的增大而减小；同时，等离子体中心线上的温度随着入口质量流率的增大而减小，而随着压力的增大先减小后增大。这些结果可为感应耦合等离子体风洞优化设计及其工业应用提供理论指导。

关键词: 感应耦合等离子体, 质量流率, 工作压力, 流动特性

CLC Number:

O361.3

MA Li-bin, YU Ming-hao, LIU Kai. Numerical simulation of velocity and temperature fields of the argon inductively coupled plasma[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2020, 40(1): 28-33.

马利斌，喻明浩*，刘凯. 氩气感应耦合等离子体速度与温度数值模拟[J]. 核聚变与等离子体物理, 2020, 40(1): 28-33.

References

[1] Yu M, Takahashi Y, Kihara H, et al. Thermochemical nonequilibrium 2D modeling of nitrogen inductively coupled plasma flow[J]. Plasma Science and Technology, 2015, 17(09): 749-760.

[2] Cipullo A, Helber B, Panerai F, et al. Investigation of freestream plasma flow produced by inductively coupled plasma wind tunnel[J]. Journal of Thermophysics & Heat Transfer, 2014, 28(3): 381-393.

[3] 张秀杰, 林烈, 吴彬. 高频感应等离子体风洞的光谱诊断[J]. 空气动力学学报, 2001, 19(1): 123-127.

[4] Abeele D V, Degrez R. Efficient computational model for inductive plasma flows[J]. AIAA Journal, 2000, 38(38): 234-242.

[5] 郝瑞祥, 郑琼林, 游小杰, 等. 大功率等离子体电弧加热器电源特性分析与试验研究[C]. 第三届电工技术前沿问题学术论坛. 2007.

[6] 陈伦江, 陈文波, 刘川东, 等. 感应耦合等离子体制备球形铬粉末的工艺研究[J]. 核聚变与等离子体物理, 2017, 37(2): 244-248.

[7] 贾瑞宝, 罗天勇, 陈伦江. 基于COMSOL的感应耦合等离子体炬多物理场研究[J]. 核聚变与等离子体物理, 2018, 38(4): 473-481.

[8] 朱海龙, 童洪辉, 杨发展, 等. 感应耦合氩气热等离子体速度分布的数值分析[J]. 核聚变与等离子体物理, 2013, 33(2): 181-186.

[9] 陈文波，陈伦江，刘川东, 等. 高频感应热等离子体中粉末颗粒的运动行为研究[J]. 核聚变与等离子体物理, 2018, 38(2): 243-248.

[10] Hong S, Hong S, Lee T R, et al. Surface thermochemical reaction control utilizing planar anisotropic thermal conduit [J]. Energy & Environmental Science, 2011, 4(6): 2045-2049.

[11] 邱家稳. 薄膜材料在航天器热控上的应用[C]. TFC07全国薄膜技术学术研讨会论文摘要集. 2007.

[12] Boulos M I. Flow and Temperature fields in the fire-ball of an inductively coupled plasma[J]. IEEE Transactions on Plasma Science, 1976, 4(4): 298-298.

[13] Mostaghimi J, Boulos M I. Two-dimensional electromagnetic field effects in induction plasma modelling[J]. Plasma Chemistry & Plasma Processing, 1989, 9(1): 25-44.

[14] Munafò A, Alfuhaid S A, Cambier J L, et al. A tightly coupled non-equilibrium model for inductively coupled radio-frequency plasmas[J]. Journal of Applied Physics, 2015, 118(13): 1321-984.

[15] Lei F, Li X, Liu Y, et al. Simulation of a large size inductively coupled plasma generator and comparison with experimental data[J]. AIP Advances, 2018, 8(1): 015003.

[16] Miyatani S, Yamada K, Abe T. The Characteristics of plasma flow produced by 10kW and Æ75mm large diameter ICP heater[C]. Proceedings of 46^th Fluid Dynamics Conference, Nagoya, Japan, 2014.

[17] Tanaka M, Yamada K, Takahashi Y, et al. Spectroscopic measurement of air plasma flow generated by 10kW class ICP heater[J]. Transactions of the Japan Society for Aeronautical and Space Science, 2019, 67(2): 43-48.