有自由面渗流分析的变单元渗透系数法

Variable element seepage coefficient method for seepage numerical analysis with free surface

提出了一种渗流分析的改变渗流系数的固定网格法，该法只需进行一次网格剖分，不人为干涉计算过程，完全通过程序迭代即可准确地求出自由面的边界。算例计算表明，该法具有程序处理简单，用户操作方便，计算结果准确等特性，一般迭代收敛很快。可应用于稳定和非稳定渗流自由面边界计算。

A variable seepage coefficient of fixed grid mesh method is presented in the paper. The calculation process only needs once mesh grid, but not intervened by calculater. The free surface boundary can be calculated precisely through program iteration. The examples show that the characteristics of program is simple, the operation facile and calculation precise etc. Convergence of the method is very quickly. The method is suitable for the analysis of stable and unstable seepage with free surface.