用改进的时间差分有限分析法模拟地下水非稳定井流方程

Numerical Solutions of Groundwater Unsteady Well Flow Equation by the Improved Time Difference Finite Analytic Method

提出了一种改进的时间差分有限分析算法,它能够避免在求解水头剧烈变化时用一般有限分析法计算精度较差的缺陷。算法的稳定性好。

In this paper, the improved time difference finite analytic method has been proposed for calculating groundwater unsteacty well flow equation. By this al gorithm, the shortcoming of poor accuracy caused hy finite analytic method for solving process of great change of hydraulic head can be overcome. It has good stability.