高温超声速磁流体发电的近电极热电磁流动机理研究

项目名称： 高温超声速磁流体发电的近电极热电磁流动机理研究

项目编号： No.51306207

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 能源与动力工程

项目作者： 李益文

作者单位： 中国人民解放军空军工程大学

项目金额： 25万元

中文摘要： 磁流体发电技术在高超声速飞行器上有着广泛的应用前景，其工程应用将给高超声速飞行器性能带来一次革命性的提高。目前，国际上已经对磁流体发电技术应用的可行性进行了分析，原理性验证实验也取得了快速进展，但对导电流体电导率参数变化影响规律、空间分布模型以及近电极热电磁流动特性等基础问题尚不清楚。本项目在初步研究的基础上，围绕电导率空间分布模型及近电极热电磁多场耦合机理两个科学问题开展研究。典型实验条件下对导电流体电导率进行测试，并获得参数变化的影响规律，通过理论分析得到电导率空间分布模型；利用研究得到的模型作为计算条件，开展磁流体发电数值模拟研究，并通过实验对数值模拟结果进行验证，实验研究、数值模拟和理论分析结合，研究得到磁流体发电近电极热电磁流动特性，揭示多场耦合机理。以此，深化对高温燃气电离机理的理解，提高对磁流体发电通道内部复杂流动现象的认识，为磁流体发电技术在高超声速飞行器上的应用提供支持。

中文关键词： 磁流体发电；电导率；多场耦合；等离子体；高超声速

英文摘要： Magnetohydrodynamic (MHD) power generation has important application prospects in hypersonic vehicle, and its engineering application will certainly bring about a revolutionary progress. At present, the possibility analysis has been made by many researchers, and great progress has also been achieved on principle verification experiments. However, there are still some basic subjects need to be studied, such as the influence of parameter variation on conductivity, spatial distribution model and thermal-electromagnetic-flow characteristics near electrode. Based on the preliminary investigation, this project is mainly focused on the spatial distribution model and thermal-electromagnetic-flow characteristics near electrode. Under typical experiment, the conductivity of flow will be tested, and the influence of parameter variation will also be obtained. Spatial distribution model will be acquired through theoretical analysis, and then it will be used for MHD simulation research, at last the simulation results are verified by experiment. The near electrode thermal-electromagnetic-flow characteristics are acquired through experiment, simulation and theoretical analysis, and multi-field coupling mechanism is revealed. This project research will be useful for understanding the mechanism of high temperature ionization, and

英文关键词： MHD power generation；conducitivity；multi field coupling；plasma；hypersonic