Simulation and Design of Pulse Gas Injection in HFRC Device

2021 IEEE 4th International Electrical and Energy Conference (CIEEC) Pub Date : 2021-05-28 DOI:10.1109/cieec50170.2021.9510455

Shenglu Li, B. Rao, Yong Yang, Ming Zhang

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引用次数: 2

Abstract

In FRC experimental studies, it is found that the parameters of the plasma formed after the collision merging greatly depend on the plasma parameters of the formation zone. The design and optimization of the pulsed gas injection device will help the ionization of neutral gas and thereby improving the plasma parameters of the formation zone. In this paper, studies are focused mainly on the change process of gas distribution of pulse gas injection stage, and design of the pulse gas injection device. The research takes the control of gas distribution as the goal and ANSYS FLUENT as a simulation platform to carry out the study. First, in this paper, we introduce several gas injection schemes that can be used in the pulse gas injection device, and ANSYS Fluent is used for simulation comparison. Through the analysis of simulation results, we have determined the most suitable scheme for gas injection. Then, we analyze in detail the axial and radial distribution of neutral gas at different time under the optimal scheme. And the results show the advantages of multi-valve gas injection. Finally, we predict the appropriate time duration of gas injection and ionization time when the pressure source is 2 × 10^5 Pa.

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HFRC装置脉冲注气仿真与设计

在FRC实验研究中发现，碰撞合并后形成的等离子体参数在很大程度上取决于形成区的等离子体参数。脉冲气体注入装置的设计和优化将有助于中性气体的电离，从而改善地层区的等离子体参数。本文主要研究了脉冲注气阶段气体分布的变化过程，以及脉冲注气装置的设计。本研究以气体分布控制为目标，以ANSYS FLUENT为仿真平台进行研究。首先，本文介绍了脉冲注气装置中可采用的几种注气方案，并利用ANSYS Fluent进行了仿真比较。通过对模拟结果的分析，确定了最合适的注气方案。然后，详细分析了优化方案下不同时间中性气体的轴向和径向分布。结果表明了多阀注气的优越性。最后，我们预测了压力源为2 × 10^5 Pa时适宜的注气时间和电离时间。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2021 IEEE 4th International Electrical and Energy Conference (CIEEC)

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