| 计算流体力学中有限元的强间断处理 |
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| 引用本文： | 王岩.计算流体力学中有限元的强间断处理[J].空气动力学学报,1994,12(1):22-29. |
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| 作者姓名： | 王岩 |
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| 作者单位： | 北京空气动力研究所 |
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| 摘 要： | 本文首次提出了无波动，无自由参数的有限元离散方法，它是基于矢通量分裂后其物理传播特性，利用差分格式构造过程中对激波上下游不同性质的分析，对一维Ｅｕｌｅｒ方程进行了仔细分析，并将其推广到二维，轴对称的无粘，有粘方中，从计算实践看，这种方法简便、实用，对激波，分离，激波与边界层干扰的复杂流场有较好的分辨能力和计算稳定性，比以往的迎风有限元，加入Ｌａｐｄｉｕｓ人工粘性修正的有限元有更好的流场分辨能力，使
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| 关 键 词： | 有限元法 波动 欧拉运动方程 |
The Computation of FEM with Strong Discontinuity in CFD |
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| WangYan.The Computation of FEM with Strong Discontinuity in CFD[J].Acta Aerodynamica Sinica,1994,12(1):22-29. |
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| Authors: | WangYan |
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| Institution: | Beijing Instituie of Aerodynamics |
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| Abstract: | ln this paper,a non-oscillatory and no free parameters finite element algorithm is developed,based on a flux vector splittingand analysis for the features of upstream and downstream of shock wave.A detailed analysis for solving l-D Euler equation is reported and extended to 2-D or axisymmetric space.From the results , the algorithm is con-venient,practical and has better resolution and stability for the shock cap-turing separated flow and interaction between shock wave and boundary-layer. |
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| Keywords: | finie element method non-oscillaton strong discontinuity Euler equation |
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