摘要
本研究对土壤中水盐运动对流扩散方程进行了数值计算。利用省时的一阶精度的特征-分步法及使对流项作保留迎风特性的二阶精度的差分法,对在蒸发条件下土壤盐分向上运动积盐过程进行模拟,两个方法的计算结果与实验结果总体上都重合较好。
A numerical simulation study of advection-diffusion equation is presented here for studying salt solute movement in soil. By using both less time consuming splitting method combined with characteristics and quadratic upstream interpolation difference scheme, the salt cumulation process at soil surfuce due to salt moving up under evaporation is simulated numerically. In general, the computational results from the methods agree with experiment results well.
出处
《力学学报》
EI
CSCD
北大核心
1989年第6期688-696,共9页
Chinese Journal of Theoretical and Applied Mechanics
关键词
蒸发
土壤
水盐运动
模拟
salt-solute movement, Quadratic upstream interpolation, splitting methods combined with characteristics
