| 多介质流动改进型Level-Set重新初始化方法 |
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| 引用本文： | 张学莹,赵宁.多介质流动改进型Level-Set重新初始化方法[J].空气动力学学报,2006,24(4):438-443. |
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| 作者姓名： | 张学莹 赵宁 |
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| 作者单位： | 1. 河海大学理学院,江苏,南京,210098
2. 南京航空航天大学航空宇航学院,江苏,南京,210016 |
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| 基金项目： | 国家自然科学基金（10576015）;国防科技重点实验室基金（51479010205HK0207）. |
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| 摘 要： | 根据Level-Set函数在网格点处的值,预估出间断面的位置,并对间断面附近网格点上的LS值作相应调整,使其保持距离函数的性质,能够避免由于重新初始化造成间断面位置移动的问题。数值计算采用高精度WENO格式,对于多个可压缩流问题进行了数值模拟,表明了该方法的有效性。
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| 关 键 词： | 双曲型守恒律 Level-Set方法 WENO格式 间断GFM |
| 文章编号： | 0258-1825（2006）04-0438-06 |
| 收稿时间： | 2005-07-30 |
| 修稿时间： | 2005-07-302005-10-25 |
An improved reinitialization algorithm for multi-component fluid |
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| ZHANG Xue-ying,ZHAO Ning.An improved reinitialization algorithm for multi-component fluid[J].Acta Aerodynamica Sinica,2006,24(4):438-443. |
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| Authors: | ZHANG Xue-ying ZHAO Ning |
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| Institution: | 1.College of Science,Hohai University,Nanjing 210098,China;2.College of Aerospace Engineering ,Nanjing University of Aeronautics and Astronauties ,Nanjing 210016,China |
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| Abstract: | In this paper,an improved reinitialization algorithm is developed for implementation of Level-Set methods.The new algorithm can keep LS values approximately equal to the signed distance function in the two sides of fluid interface so as to avoid the incorrect movement of the fluid interface during the time evolution of the Level Set equation.Finally,combining with the discontinuous Ghost Fluid Method,the new algorithm is applied to some compressible and incompressible multi-component flows problems.The computational results are satisfied. |
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| Keywords: | hyperbolic conservation laws Level-Set method WENO scheme discontinuous Ghost Fluid Method |
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