Flowfield Structure and Acceleration Process in Quasi-Steady Magneto-Plasma-Dynamic (MPD) Arc Channels

准稳态磁等离子体动力 (MPD) 电弧通道中的流场结构和加速过程

• 批准号: 07651123
• 负责人: TAHARA Hirokazu
• 金额: $ 0.32万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07651123/
• 关键词: MPD Thruster; Electromagnetic Acceleration; Plasma Flow; Plasma Diagnostics; Inner Flow; 数値解析

Plasma diagnostic measurement and flowfield analysis in quasisteady coaxial magnetoplasmadynamic (MPD) channels were made to understand blowing acceleration, i.e., one-dimensional flowfield. For Ar, measured current fractions on the anode intensively increased near the inlet. However, current fractions on the cathode gradually increased downstream, and current slightly concentrated near the inlet at high magnetic Reynolds numbers. The electron temperatures were axially kept about 1.0 eV and slightly increased near the inlet and the outlet. The electron number densities increased near the exit, and the characteristics correspond to the current distributions. The experimental results agreed roughly with analyzed ones. Accordingly, it is expected from the axial profile of Lorentz forces inferred from the measured physical properties and the calculated plasma velocities that there are two acceleration zones near the inlet and the outlet. Furthermore, it is predicted from the numerical analysis that the acceleration caused by ionization process is dominant near the inlet.

在准稳态同轴磁磁动力（MPD）通道中的血浆诊断测量和流场分析以了解吹气加速度，即一维流场。对于AR，测得的阳极上阳极上的电流分数在进气口附近增加。但是，阴极上的当前部分逐渐增加下游，并且电流在高磁性雷诺数上的入口附近略有浓缩。电子温度保持轴向保持约1.0 eV，并在入口和出口附近略有增加。电子数密度在出口附近增加，并且特性对应于当前的分布。实验结果与分析的结果大致达成共识。因此，可以从测得的物理特性和计算出的等离子速度推断出的洛伦兹力的轴向剖面，这是在入口和出口附近有两个加速区。此外，从数值分析中可以预测，由电离过程引起的加速度在入口附近是主要的。

项目成果

Takashi Yomezawa: "Spectroscopic Measurement and Numerical Analysis of Thermal Non-Equilibrium Flow in a 10-KW-Class Arcjet Thruster" Proc. 20th Int. Symp. Space Technol. and Sci.Vol.1. 102-108 (1996)

Takashi Yomezawa：“10 千瓦级 Arcjet 推进器中热非平衡流的光谱测量和数值分析”Proc。

Kazunori Mitsuo et al.: "Arc Structure in a Quasi-Steady MPD Channel" Proc.20th Int.Symp.Space Technol.and Sci.Vol.1. 158-165 (1996)

Kazunori Mitsuo 等人：“准稳态 MPD 通道中的弧结构”Proc.20th Int.Symp.Space Technol.and Sci.Vol.1。

Hirokazu Tahara: "Plasma Features in Quasisteady MPD Chonnels" 24th Int. Electric Propulsion Cont.,Moscow. 95-116. 1-9 (1995)

Hirokazu Tahara：“准稳态 MPD 通道中的等离子体特征”第 24 届 Int。

Takashi Yonezawa et al.: "Spectroscopic Measurement and Numerical Analysis of Thermal Non-Equilibrium Flow in a 10-kW-Class Arcjet Thruster" Proc.20th Int.Symp.Space Technol.and Sci.Vol.1. 102-108 (1996)

Takashi Yonezawa 等人：“10 kW 级电弧喷射推进器中热非平衡流的光谱测量和数值分析”Proc.20th Int.Symp.Space Technol.and Sci.Vol.1。

Hirokazu Tahara: "Effects of Applied Magnetic Fields on Performance of a Quasisteady Magnetoplasmadynomic Arcjet" Journal of Propulsion and Power. 11. 337-341 (1995)

Hirokazu Tahara：“应用磁场对准稳态磁等离子体动力电弧喷射性能的影响”推进与动力杂志。