摘要
该文针对边界不规则、区域水文地质条件复杂的地下水数值模拟求解问题,采用基于控制体积有限差分非结构网格方法,介绍了地下水流模型建立与求解过程。结合一个模型算例,用非结构网格模拟源汇项、地下水位和流场分布,并与结构网格模拟结果进行对比分析。结果表明,非结构网格比结构网格剖分网格单元数少,实现简便,且能有效地减少计算量,对于有抽水井、河流等边界条件不规则的地下水模拟能提高计算精度。
In order to deal with the problem of irregular boundary and regional complex hydrogeological conditions in groundwater model, numerical the unstructured grid with the control volume finite Difference （CVFD） method is used to introduced, the model establishment and solving process of groundwater flow. An example is taken as the object of study in this paper. The sources and sinks, water level and flow field distribution is simulated by unstructured gird, and compoved it with the simulated vesults by structured gird. The results show that the cells of unstructured grid are less than structured grid, it is easy to realize and also it can reduce the amount of computation effectively. It has higher simulation accuracy about groundwater models with complex geometric boundary such as pumping well, srivers and so on.
出处
《勘察科学技术》
2016年第1期14-17,共4页
Site Investigation Science and Technology
