长磁绝缘传输线传输过程数值模拟研究

发布时间：2018-01-10 09:21

本文关键词：长磁绝缘传输线传输过程数值模拟研究　出处：《电子科技大学》2014年硕士论文　论文类型：学位论文

【摘要】：近年来,随着高功率脉冲技术在民用军用以及高新技术领域的高速发展,许多发达国家开始着力开展对Z箍缩装置的研究。磁绝缘传输线作为Z箍缩装置的重要组成器件,磁绝缘传输线的设计和理论研究是关键性的技术核心,但是由于器件的结构复杂、成本高,所以一般要求在投入实际的实验之前对设计的磁绝缘传输线进行仿真模拟。本文主要是基于CHIPIC粒子模拟软件平台对磁绝缘传输线进行PIC模拟,不仅研究了磁绝缘传输线的基本理论,而且对关于传输线的设计也进行了比对分析,而后采用CHIPIC对单路脉冲功率真空装置进行粒子模拟,为其投入实际实验提供有力的保证。具体分为以下几个内容:首先,对磁绝缘传输线的基本理论进行分析,介绍了电子磁绝缘的稳态流理论和非稳态流理论,运用CHIPC粒子模拟软件和MAGIC粒子模拟软件同时对同一结构进行PIC仿真,验证CHIPIC在同轴磁绝缘传输线模型的模拟的正确性。其次,介绍了三种电磁模拟算法——中心差分算法、时偏算法和高品质因数算法,并对同一结构使用三种算法分别模拟研究,来研究三种算法所模拟的结果的区别。并且对不同网格划分对于PIC模拟结果的影响做了简单的介绍。再次,研究了同轴磁绝缘的设计需要注意的地方。不仅要选择合适的负载二极管阴阳极之间的间距,还要根据实际的需要选择合适的同轴磁绝缘传输线阴阳极间的间距,更要注意不同磁绝缘传输线相链接时,其阻抗匹配的问题。最后,研究了单路脉冲功率真空装置中脉冲功率的馈入、汇聚及传输,在CHIPIC平台上,采用多台计算机进行分进程并行计算的方法,突破了单台计算机的内存及运行速度限制,对单路脉冲功率的馈入、汇聚及传输装置进行建模,并设置相应的参数,从而对该大尺度装置进行了整体模拟。不仅对1米长传输段的装置进行了模拟,还对拥有12米长传输段的长磁绝缘传输线进行了模拟,模拟得到的该器件各个部分的阴阳极间电压、阴阳极电流等一些重要的物理参数。模拟结果表明:该单路真空脉冲功率器件整体都可以保持磁绝缘状态,并达到了很好的功率汇聚的作用。该工作验证了真空状态下脉冲功率产生及传输器件的可行性,为进一步的实验研究提供了有力保证。
[Abstract]:In recent years, with the rapid development of high power pulse technology in civil and military high-tech fields, many developed countries began to carry out research on Z pinch device. An important part of the magnetically insulated transmission line as Z pinch device, design and theoretical research of magnetically insulated transmission lines is the core technology of the key, but because the device has complicated structure, high cost, so the general requirements before put into the experimental design of the magnetically insulated transmission line simulation. This paper mainly CHIPIC particle simulation software platform of magnetically insulated transmission line based on PIC simulation, not only studies the basic theory of magnetically insulated transmission lines, and the design of transmission line were also compared, and then using CHIPIC particle simulation of single pulse power vacuum device, provide a powerful guarantee for the actual experiment. Divided into specific The following contents: firstly, the basic theory of magnetically insulated transmission line is analyzed, the steady-state magnetic insulation flow theory and unsteady flow theory, the use of CHIPC particle and PIC simulation of a structure simulation software and MAGIC simulation, the correctness of the simulation model of transmission line verification in CHIPIC coaxial magnetically insulated. Secondly, introduces three kinds of electromagnetic simulation algorithm -- central difference algorithm, partial algorithm and algorithm of high quality factor, and for the same structure using the three algorithms, simulation study, the difference of the three algorithms. The simulation results of different mesh for the effect of the simulation results of PIC to do a simple introduction. Again, on the need to pay attention to the design of coaxial magnetically insulated place. Not only to select the load distance between anode and cathode diode is appropriate, but also according to the actual need to select the appropriate The coaxial magnetically insulated transmission line spacing between yin and Yang, more attention should be paid to the different magnetically insulated transmission line link, the impedance matching problem. Finally, the single channel pulsed power vacuum device feeding, gathering and transmission, in the CHIPIC platform, using multiple computer calculation method the process of parallel, broke through the memory and the running speed of the single computer, for single pulse power feed, gathering and transmission device modeling, and set the corresponding parameters, and thus to the large scale of the overall simulation device. Not only for the 1 meter long transmission device section was simulated, for long the magnetic transmission section has 12 meters long insulated transmission line is simulated, simulation results of the device in various parts of the cathode and anode voltage, anode current and some important physical parameters. The simulation results show that the single pulse power vacuum The whole device can maintain magnetic insulation state and achieve good power convergence. This work verifies the feasibility of pulsed power generation and transmission devices in vacuum, and provides a strong guarantee for further experimental research.

【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN811

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