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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。
The problem of seawater intrusion is solved by using the improved FE method to overcome the numerical dispersion and oscillation problems encountered in solving this problem. The mathematical model of the three-dimensional seawater intrusion is solved by exchanging cations Na ~ + and Ca ~ (2+) as simulation factors, taking into account the water-rock cation exchange. The results of model calculation and observation are contrasted and verified.