| AUSM系列算法对比研究及背景太阳风初步应用 |
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| 引用本文： | 王涛,李会超,张曼,付华峥.AUSM系列算法对比研究及背景太阳风初步应用[J].空间科学学报,2015,35(4):393-402. |
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| 作者姓名： | 王涛 李会超 张曼 付华峥 |
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| 作者单位： | 1.中国科学院国家空间科学中心 空间天气学国家重点实验室 北京 100190;;2.中国科学院大学 北京 100049 |
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| 基金项目： | 国家自然科学基金项目资助 |
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| 摘 要： | 磁流体力学数值模拟是研究日地物理学现象的一个重要手段. 对比三种AUSM算法, 即AUSM, AUSM+和AUSMPW+, 结合HDC磁场散度消去方法计算多维MHD问题的性能. 通过分析三种算法计算Rotor算例和Orszag-Tang vortex算例的结果发现, AUSM+算法的性能最好. 进一步使用AUSM+算法基于6片网格构造模拟了日冕结构, 计算结果表明这种算法能够正确计算出日冕的大尺度结构. 对于日冕结构模拟块, HDC方法能够较好 地控制磁场散度误差.
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| 关 键 词： | AUSM系列算法 HDC方法 日冕模拟 |
| 收稿时间： | 2014-05-14 |
| 修稿时间： | 2014-09-16 |
Comparative Study of Three AUSM Algorithms and Simulated Application on the Solar Wind |
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| WANG Tao,LI Huichao,ZHANG Man,FU Huazheng.Comparative Study of Three AUSM Algorithms and Simulated Application on the Solar Wind[J].Chinese Journal of Space Science,2015,35(4):393-402. |
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| Authors: | WANG Tao LI Huichao ZHANG Man FU Huazheng |
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| Institution: | 1. State Key Laboratory of Space Weather National Space Science Center, Chinese Academy of Sciences, Beijing 100190;;2. University of Chinese Academy of Sciences, Beijing 100049 |
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| Abstract: | Numerical simulation of MHD (Magnetohydrodynamics) is an important method to study solar-terrestrial physics phenomena. In this paper, three AUSM algorithms, i.e., AUSM, AUSM+, AUSMPW+, were compared in conjunction with the HDC method to eliminate the divergence of the magnetic field. The AUSM+ algorithm is found to be better than the AUSM algorithm and the AUSMPW+ algorithm through the results of Rotor example and Orszag-Tang vortex example. Further, the AUSM+ algorithm is used to simulate the coronal with a six-component grid system. The results show that this algorithm can correctly calculate the large-scale structure of the corona. Also, the HDC method can maintain the divergence-free constraint on the magnetic field. |
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| Keywords: | AUSM algorithms HDC method Simulation of corona |
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