摘要
海滩地下水与地表水之间的质量和动量交换对于近岸海域的泥沙输运、盐水入侵以及地表水与地下水中污染物质的迁移扩散有重要的影响。通过对描述地下水和地表水运动的控制方程的有限差分离散格式进行重新组织,构造了一种新的地下水和地表水的耦合计算方法。作为地表水与地下水的分界面的海滩动边界在该模型中可以被隐式的模拟,无需特别处理。通过与解析解和实验数据的比较,证明本文方法可以有效地对斜坡海滩的地下水和地表水运动进行模拟。
The mass and momentum exchange between coastal aquifer and nearby water bodies have significant impacts on coastal processes such as beach sediment transport, salinity intrusion transport and diffusion of pollutant. In this paper a new dynamically integrated ground-surface water numerical model is developed via organizing the discretized governing equations of the two types of flow in the same manner. The moving boundary is considered as the interface between the groundwater domain and the surface water domain, and it can be simulated naturally without any additional numerical effort. Comparison of the model predicted results with the existed analytical solutions and experimental data shows that the new model is able to simulate the combined groundwater and surface water flow in coastal area with slope beach.
出处
《海洋通报》
CAS
CSCD
北大核心
2009年第6期106-111,共6页
Marine Science Bulletin
基金
天津市自然科学基金(07JCYBJC07500)
国家自然科学基金(10702050)
关键词
地下水
地表水
海滩
动边界
数学模型
groundwater
surface water
beach
moving boundary
numerical model
