论文部分内容阅读
本文提出了一种地表点源土壤水分入渗的数值模拟模型.采用ADI隐式差分格式将土壤水分入渗方程离散,用Gaues-Seidel迭代算法求解非线性差分方程.利用质量平衡原理对地表饱和区进行了动态处理.结果表明,数值计算结果较吻合于实测数据,所提出的数值模型既适用于均质土壤,也适用于成层土壤.
In this paper, a numerical simulation model of surface point source soil moisture infiltration is proposed. The ADI implicit difference scheme is used to discretize soil water infiltration equation. The Gauss-Seidel iterative algorithm is used to solve the nonlinear difference equation. Using the principle of mass balance, the surface saturated zone is dynamically treated. The results show that the numerical results are in good agreement with the measured data. The proposed numerical model is suitable for both homogeneous soil and layered soil.