摘要
本文用有限元方法模拟二维入渗沟排水的洗盐过程,三角单元的剖分随饱和—非饱和自由界面而变化,用迭代方法求解水流方程。对Darcy流速、溶质(盐分)浓度分布,脱盐率等进行了定量的研究,讨论入渗率与时间、入渗率与脱盐率,沟间距、沟深与脱盐率等之间的数量关系。
The finite elements method is used to simulate the process of salt transportation due to infiltration in two dimensional soil. The size of triangular elements can be regulated automatically near the saturated-unsaturated free boundary. The flow-equation is solved by iterative method. Comparisons of Darcy's velocities,salt concen-tration in soil and desalination rate are made Under different initial conditions aned-boundafy conditions; the relations of infilitration and time, infilitration and desali-nation, the distance between two adjacent ditches, depth of ditches and desalination rate are discussed.
出处
《高校应用数学学报（A辑）》
CSCD
北大核心
1990年第3期413-427,共15页
Applied Mathematics A Journal of Chinese Universities(Ser.A)
