Numerical Analysis of Plasma Flow with Supersonic Plasma Gun

Q3 Engineering

推进技术 Pub Date : 2015-01-01 DOI:10.13675/J.CNKI.TJJS.2015.01.005

C. Tan, Zhengying Wei, Pei Wei, Ben Q. Li, Z. Han

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引用次数: 1

Abstract

A multi-physic fields coupling mathematical model was established using fluid controlling equations,heat and mass transfer equations,species transport equations and Maxwell's electromagnetic equations,to predict flow field characteristics inside and outside supersonic plasma gun. The three-dimensional model contained cathode,anode and anode boundary layers,and took ionization and recombination reactions,as well as non-local thermal equilibrium into consideration. The contours of temperature and velocity of plasma jet were displayed under argon and argon- hydrogen working conditions, and arc voltage was also described. The results show that gas temperature inside plasma gun increases by 30%,and velocity increases by 67% after hydrogen was added to working gas. Besides,gas temperature and velocity decrease more sharply at distance of 0~50mm from nozzle exit than that of 50~100mm,while the decrease rate of the velocity and temperature are reduced with increasing axial distance. The relative error of calculated arc voltage is 4.4%,compared with measured value,illustrating the reasonableness of model after considering anode boundary layer.

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超声速等离子体枪等离子体流动数值分析

利用流体控制方程、传热传质方程、物质输运方程和麦克斯韦电磁方程，建立了多物理场耦合数学模型，预测了超声速等离子体枪内外流场特性。三维模型包含阴极、阳极和阳极边界层，并考虑了电离和复合反应以及非局域热平衡。显示了氩气和氢氩气工况下等离子体射流的温度和速度曲线，并描述了电弧电压。结果表明，在工作气体中加入氢气后，等离子枪内温度提高了30%，速度提高了67%。在距离喷管出口0~50mm处，气体温度和速度的下降幅度大于距离喷管出口50~100mm处，速度和温度的下降幅度随着轴向距离的增加而减小。计算电弧电压与实测值的相对误差为4.4%，说明了考虑阳极边界层后模型的合理性。

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来源期刊

推进技术 Engineering-Aerospace Engineering

CiteScore

1.40

自引率

0.00%

发文量

6610

期刊介绍： "Propulsion Technology" is supervised by China Aerospace Science and Industry Corporation and sponsored by the 31st Institute of China Aerospace Science and Industry Corporation. It is an important journal of Chinese degree and graduate education determined by the Academic Degree Committee of the State Council and the State Education Commission. It was founded in 1980 and is a monthly publication, which is publicly distributed at home and abroad. Purpose of the publication: Adhere to the principles of quality, specialization, standardized editing, and scientific management, publish academic papers on theoretical research, design, and testing of various aircraft, UAVs, missiles, launch vehicles, spacecraft, and ship propulsion systems, and promote the development and progress of turbines, ramjets, rockets, detonation, lasers, nuclear energy, electric propulsion, joint propulsion, new concepts, and new propulsion technologies.