| 引用本文: | 张康平,丁国昊,田正雨,等.磁流体动力学控制二维扩压器流场数值模拟研究.[J].国防科技大学学报,2009,31(6):39-42.[点击复制] |
| ZHANG Kangping,DING Guohao,TIAN Zhengyu,et al.Numerical Simulation of Magnetohydrodynamic (MHD) Control on 2D Diffuser's Flow Field[J].Journal of National University of Defense Technology,2009,31(6):39-42[点击复制] |
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| 磁流体动力学控制二维扩压器流场数值模拟研究 |
| 张康平, 丁国昊, 田正雨, 李桦 |
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(国防科技大学 航天与材料工程学院，湖南 长沙 410073)
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| 摘要: |
| 对常规扩压器进行了简介并作机理分析。用小磁雷诺数假设下基于Favre质量平均的全Navier-Stokes方程来求解外加电磁场的超声速扩压器流场。与常规扩压器比较可以发现，选用适当的外加电磁场组合可以使流动在更短的距离内实现减速扩压，并将部分动能转化为电能。研究表明：仅添加一定外磁场时，第一道激波位置、第二道激波位置、激波串长度分别为无外加电磁场情况的62.19%，77.74%和50.18%。 |
| 关键词: 数值模拟 磁流体动力学(MHD) 等截面扩压器 激波串 |
| DOI： |
| 投稿日期：2009-02-16 |
| 基金项目:国家自然科学基金资助项目(10672179) |
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| Numerical Simulation of Magnetohydrodynamic (MHD) Control on 2D Diffuser's Flow Field |
| ZHANG Kangping, DING Guohao, TIAN Zhengyu, LI Hua |
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(College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| Conventional diffuser is introduced briefly and its mechanism is analyzed. Full Navier-Stokes equations based on low magnetic Reynolds number assumption with Favre weighted average mass are used to simulate the flow field in supersonic diffuser with added electric and magnetic field. Compared with conventional diffuser, it is obvious to see that the deceleration and expansion are realized in shorter distance when proper electric and magnetic field added, and part of the kinetic energy is transformed into electric energy. Study shows that the positions of the first shock wave, and the second shock wave and the length of shock train in the diffuser when certain magnetic field added are respectively 62.19%, 77.74% and 50.18% to the ones of conventional diffuser. |
| Keywords: numerical simulation magnetohydrodynamic(MHD) diffuser with near constant cross section shock train |
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