摘要
提出用改进特征有限元法来求解高度非线性的海水入侵问题,以克服在求解这一问题时碰到的数值弥散和振荡困难。所求解的三维海水入侵数学模型以交换阳离子 Na^+、Ca^(2+)作为模拟因子,考虑了水—岩间的阳离子交换作用。将模型计算结果与观测结果进行了对比验证。
In order to surmount the difficulty of numerical dispersion and numerical oscillation an im- proved characteristic finite element method is presented to solve the highly nonlinear sea water intrusion problem.The solved three-dimensional mathematical model,which regards exchanging cations Na^+ and Ca^(2+)as simulation factor,takes account of cation exchange reaction between water and rock.The simulat- ed results are satisfactory by comparison with the field data,and show that this model can be applied to predict the movement and evolution of exchanging cations during sea water intrusion.
出处
《计算物理》
CSCD
北大核心
1996年第2期201-206,共6页
Chinese Journal of Computational Physics
基金
本文工作得到国家自然科学基金资助
关键词
改进特征
有限元
海水入侵
阳离子交换
水动力学
Improved characteristic finite element method
Sea water intrusion
Cation exchange
Numerical simulation
