改进复合单元渗透系数调整法渗流自由面分析

The Improved Variable Seepage Coefficient Method of the Compound Eement for Analyzing Free Surface Seepage

在复合单元渗透系数调整法基础上,应用连续的罚函数对其改进,优化了此类算法的稳定性,提高了收敛速度和精度,并将此改进算法编制成相应的有限元分析程序,通过算例验证,可应用于稳定和非稳定渗流自由面边界复杂渗流场的高效精细模拟。

The improved variable seepage matrix method of the compound element was presented for the seepage problem with free surface in the light of usage of continuous penalty function.Then the disadvantage of unstable solution was optimized and the speed and precision were improved.It was validated programming the finite element method by a case.The complex seepage field about steady flow and unsteady flow was simulated by this method efficiently and subtly.