| 黄蔚,刘迎曦,周承芳.三维无压渗流场的有限元算法研究[J].水利学报,2001,32(6):0033-0037 |
| 三维无压渗流场的有限元算法研究 |
| Finite element algorithm for 3 D unconfined seepage flow field |
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| DOI： |
| 中文关键词: 自由面 渗流有限元分析 丢单元 算法 |
| 英文关键词: free surface seepage flow FEM abandoned element |
| 基金项目: |
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| 中文摘要: |
| 求解含自由面的三维无压渗流场属于边界不确定的非线性问题。本文首先对目前存在的各种算法进行了分析，在调整传导矩阵的基础上，提出了丢单元的有限元算法，在算例中与解析解和其他数值算法的结果进行了比较，证实了该算法的有效性，并在含排水(孔)幕的丰满大坝的渗流分析中得以应用，迭代过程收敛快，稳定性好，结论与实际情况吻合。 |
| 英文摘要: |
| Based on the iteration of adjusted conductivity matrix of element intersected at free surface, a new finite element algorithm called abandoned element method is developed. The effectiveness of this method is verified bythe comparisons of calculation results with analytic solution and other algorithms. It was applied to the seepage analysis of the dam in Fengmang Hydro Project having complicated drainage system. The analysis result is in good agreement withobservation data. |
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