摘要
针对地下水污染程度难以确定的问题,运用灰色系统理论与数值计算的方法,将对流弥散系数、渗流速度、以及衰减系数以灰参数的形式表示,建立了地下水污染的灰色数值模型,并给出了该模型的求解方法。在求解过程中,将有限差分法的截断误差进行了修正。结合地下水溶质运移问题的典型问题的示例,运用该模型进行了模拟计算。研究结果表明:在水文、水质资料较为缺乏的情况下,该模型能够模拟地下水污染的动态变化过程。
In view of the uncertainty of groundwater pollution, velocity and dispersion coefficient and attenuation in river are considered as uncertainty parameters and expressed as gray parameters, and the gray numerical model of groundwater pollution is developed with gray systematic theory and numerical method and the method is given. The truncation errors in finite differential equation are corrected in solving the model. The typical solute transport equation of groundwater as an example is simulated with the gray model. The results indicate that the gray model can simulate the dynamic process in the absence of the information of hydrology and water quality
出处
《辽宁工程技术大学学报（自然科学版）》
EI
CAS
北大核心
2007年第6期947-949,共3页
Journal of Liaoning Technical University (Natural Science)
基金
河北省自然科学基金资助项目(D2005000463)
关键词
地下水污染
灰参数
不确定性
截断误差
有限差分
groundwater pollution
gray parameters
uncertainty
truncation error
finite differential
