| 流体界面不稳定性数值模拟中不同介质界面的处理方法 |
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| 引用本文： | 蔚喜军,尤迎玖.流体界面不稳定性数值模拟中不同介质界面的处理方法[J].计算物理,2001,18(1):23-26. |
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| 作者姓名： | 蔚喜军 尤迎玖 |
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| 作者单位： | 北京应用物理与计算数学研究所,计算物理实验室, |
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| 基金项目： | 国家自然科学基金(19771012)和中国工程物理研究院科学基金(970114)资助项目 |
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| 摘 要： | 在界面不稳定性数值模拟中，以往的方法^〔1，4－8〕局限于密度不同的单种介质或绝热指数相同的两种介质问题，在计算绝热指数不同介质间的扰动时，界面上强制加入接触间断边界条件，从而避免了界面上数的非物理振荡，用三维程序TVD／AC对两种不同介质，在单波扰动下Rayleigh-Taylor不稳定性的发展进行了计算，得到了扰动随时间发展的图像。
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| 关 键 词： | 界面不稳定性 LEVEL SET方法 FRONT TRACKING方 |
| 文章编号： | 1001-246X-(2001)01-0023-04 |
| 修稿时间： | 1999年1月28日 |
A COMPUTATIONAL SCHEME OF
DIFFERENT MEDIUM INTERFACES IN THE NUMERICAL SIMULATION OF FLOW INTERFACIAL INSTABILITY |
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| YU Xi-jun.A COMPUTATIONAL SCHEME OF
DIFFERENT MEDIUM INTERFACES IN THE NUMERICAL SIMULATION OF FLOW INTERFACIAL INSTABILITY[J].Chinese Journal of Computational Physics,2001,18(1):23-26. |
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| Authors: | YU Xi-jun |
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| Abstract: | In the numerical simulation of the interfacial instability, theschemes in 1,4～8] were limited problems in one medium with different densities or two media with homologous adiabatic exponent. If the schemes are used in computing the disturbance of different medium interfaces with homologous adiabatic exponent, the physical quantities on interfaces may give rise to nonphysical oscillation. To overcome the problem, this paper introduces the front tracking scheme2] into the Level Set method, namely the contact discontinuous boundary conditions are coercively added on interfaces so that the nonphysical oscillation is avoided. The evolution of Rayleigh-Taylor instability is examined by the three-dimensional TVD/AC program under the single wave . The disturbed figures with time are given. |
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