| 无振荡,无自由参数格式在三维太阳风流动数值模拟中的应用 | |
| Alternative Title | APPLICATIONS OF A NON-OSCILLATORY,NON-FREE PARAMETER SCHEME IN THREE DIMENSIONAL SOLAR WIND FLOW SIMULATIONS |
| 叶占银; 魏奉思; 北京8701信箱 | |
| Department | 空间天气学国家重点实验室 |
| Source Publication | 空间科学学报
 |
| 2000 | |
| Volume | 20Issue:3Pages:208-215 |
| ISSN | 0254-6124 |
| Language | 中文 |
| Keyword | 数值模拟 cme事件 三维流动 太阳风 nnd |
| Abstract | 从快速,有效地进行空间天气数值预报的需要出发,针对1998年5月份行星际太阳风暴事件,采用全三维流体力学(HD)模型进行数值试验,考察了无振荡,无自由参数(NND)格式在三维太阳风流动数值模拟中的应用.计算中内边界的密度分布由观测Ｋ日冕数据来确定,由此得到的源表面密度分布具有和源表面电流片相似的结构.数值试验表明:虽然该格式不需要加入人工粘性,但是具有很好的计算稳定性.在扰动计算时激波间断耗散小. |
| Other Abstract | Non-oscillatory, nor-free parameter scheme is employed to split three-dimensional time-dependent hydrodynamic model for numerical computation. Computatians of background $uid field and disturbance propagatian are carried out for the coronal mass ejection occurring in lflay 1998.A similar density distribution to that of ra-dial magnetic an solar source surface can be determined from the HAO K-corona meter polarization-brightness data, which can be taken as inner boundary density distribution.The propagation of disturbance shows a sharp discontinuity without spurious oscillation and dispersion. Also,the numerical test shows that.the scheme keeps a stable iteration withaut any artificial diffusion being added.an the ather hand,the source code programmed with this hydrodynamic model can be used to madel the specific coronal mass ejection }}hen the configuration of magnetic field is not decisive the solar wind flow. |
| Indexed By | CSCD |
| Funding Project | 中国科学院空间科学与应用研究中心 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.nssc.ac.cn/handle/122/1442 |
| Collection | 空间科学部 |
| Corresponding Author | 北京8701信箱 |
| Recommended Citation GB/T 7714 | 叶占银,魏奉思,北京8701信箱. 无振荡,无自由参数格式在三维太阳风流动数值模拟中的应用[J]. 空间科学学报,2000,20(3):208-215. |
| APA | 叶占银,魏奉思,&北京8701信箱.(2000).无振荡,无自由参数格式在三维太阳风流动数值模拟中的应用.空间科学学报,20(3),208-215. |
| MLA | 叶占银,et al."无振荡,无自由参数格式在三维太阳风流动数值模拟中的应用".空间科学学报 20.3(2000):208-215. |
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| 2000203208.pdf（208KB） | 开放获取 | CC BY-NC-SA | View Download | |||
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