高阶精度CE/SE算法及其应用
High-order CE/SE Method and Applications
查看参考文献15篇
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文摘
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对时-空守恒元解元算法(CE/SE)的网格设置做较大改进,提出一种新的六面体解元和元定义;同时在解元中对物理量进行高阶Taylor展开,给出一种在时间和空间上均具有高阶精度CE/SE算法.在此基础上,把新型的高阶精度CE/SE算法推广应用于高速流动捕捉激波间断、气相化学反应流动、计及固体动态效应的流体-弹塑性流动和非稳态多相不可压缩粘性流动中.数值实践表明,提出的新型网格结构上的高阶精度CE/SE算法具有算法简单、计算精度高、计算效率和计算效果好的优点,并大大改进和拓展了CE/SE算法的应用范围. |
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其他语种文摘
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Space-time conservation element and solution element (CE/SE) method with second order accuracy is modified on hexahedral grids.High-order accuracy in space and time is obtained by expanding variables in SEs with high order.CE/SE method is used to capture shock waves in chemical reaction flows,elastic-plastic flows and unsteady multi-phase incompressible flows.Numerical results are compared with experimental and theoretical results of classical examples.It is indicated that the method is easy to implement,accurate and efficient.Application of high order CE/SE method is extended. |
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来源
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计算物理
,2009,26(2):211-220 【核心库】
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关键词
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CE/SE算法
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激波捕捉技术
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化学反应流动
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流体-弹塑性流动
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多相不可压缩粘性流动
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地址
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1.
中国科学院力学研究所, 北京, 100190
2.
北京大学工学院, 北京, 100871
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1001-246X |
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学科
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数学;力学 |
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基金
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国家自然科学基金
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文献收藏号
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CSCD:3530487
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参考文献 共
15
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