| 可压缩多介质流体数值模拟中的Level-Set间断跟踪方法 |
| |
| 引用本文： | 张学莹,赵宁,王春武.可压缩多介质流体数值模拟中的Level-Set间断跟踪方法[J].计算物理,2006,23(5):518-524. |
| |
| 作者姓名： | 张学莹 赵宁 王春武 |
| |
| 作者单位： | 1. 南京航空航天大学航空宇航学院, 江苏 南京 210016;2. 南京航空航天大学理学院, 江苏 南京 210016 |
| |
| 基金项目： | 国家自然科学基金;国防重点实验室基金 |
| |
| 摘 要： | 针对可压缩多介质流体的数值模拟,发展了一种Level-Set间断追踪技术,用LS(Level-Set)函数追踪激波和捕捉界面,用Riemann问题解构造带状区域内的虚拟流体状态,对物理量的外推方法、间断附近虚拟流体的构造、间断推进速度的计算等问题进行了研究.最后对可压缩多介质流体一维和二维守恒律方程组进行数值模拟,数值计算采用通量重构的高精度WENO格式,计算结果令人满意.
|
| 关 键 词： | 多介质流体界面 Level-Set间断跟踪 虚拟流动方法 WENO格式 |
| 文章编号： | 1001-246X（2006）05-0518-07 |
| 收稿时间： | 2005-05-08 |
| 修稿时间： | 2005-11-21 |
A Level-Set Discontinuity Tracking Method for Compressible Multifluids |
| |
| ZHANG Xue-ying,ZHAO Ning,WANG Chun-wu.A Level-Set Discontinuity Tracking Method for Compressible Multifluids[J].Chinese Journal of Computational Physics,2006,23(5):518-524. |
| |
| Authors: | ZHANG Xue-ying ZHAO Ning WANG Chun-wu |
| |
| Institution: | 1. College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;2. College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
| |
| Abstract: | The Level-Set discontinuity tracking technology is extended to the simulation of general compressible multimaterial flows.A Level-Set function is used to keep the track of the interface and discontinuity.A conservative high order accurate WENO scheme is employed.The ghost fluids are constructed in the narrow band region with solution of the Riemann problem.The GFM(ghost fluid method) is implemented for the study of material interface and general discontinuity such as detonation discontinuities.The algorithm is applied to simulate multi-material fluid flows and satisfactory numerical results are obtained. |
| |
| Keywords: | multi-component fluid interface Level-Set front tracking ghost fluid method WENO scheme |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《计算物理》浏览原始摘要信息 |
| 点击此处可从《计算物理》下载免费的PDF全文 |
