摘要
本文在水盐运移实验基础上,正确地采用了考虑土壤不动水体与吸附作用的溶质运移数学模型和以v为因变量的土壤水分数学模型。在非饱和蒸发条件下对各种求解溶质运移方程的数值方法进行了系统比较,采用了适合于本研究特征—饱和—非饱和流的特征—有限元法对灌溉入渗、蒸发和再分配条件下饱和—非饱和土壤溶质运移规律作了较系统的计算机数值模拟与预测研究。
Based on the experiment of the soil water-salt movement,a mathemat-ical model of solute transport in soils under influnce of soil absorption andimmobile water and a mathematical model of soil water movement were used.After compared with the numerical solutions of solute convection-diffusi onequation in the one-dimensional saturated-unsaturated soil under evaporationcondition,the numerical method of the Characteristic Method combined withFinite Element scheme (CMFE) was used to calculate and simulate solutetransfer through the saturated and unsaturated soils systematically underirrigation (infiltration),evaporation and redistribution conditions.
出处
《内蒙古农业大学学报（自然科学版）》
CAS
1991年第4期8-15,共8页
Journal of Inner Mongolia Agricultural University(Natural Science Edition)
关键词
饱和—非饱和
土壤吸附
不动水体
盲孔
水动力弥散
数值模拟
saturated-unsaturated
soil absorption
immobile water
dead end
hydrodynamic dispersion
numerical simulation
