摘要
用非结构三角形同位网格剖分计算区域、布置计算变量,用有限体积法离散方程,并采用推进线边界法处理动边界问题,从而建立了一种新的浅水方程数值模式.京唐港和三沙湾海域潮流的率定、验证结果表明,该模式不仅物理意义明确,数值方法简单,全域内满足水流质量和动量的守恒性,而且能更好地模拟海湾、河口复杂地形下的水流运动,反映水流漫滩和露滩等过程.
With non-structured collocated triangle grid to divide the computational region and to arrange the computation variables, the finite volume method to discretize formulas, and the progressive line boundary method to deal with the dynamic boundary, a new numerical model was developed for solving the 2-D shallow water equation. The model was applied to simulation of tides near Jingtang harbor and Sansha hay, and the calculated results were in good agreement with the field data. Study shows that the model is clear in physical meaning and simple in numerical calculation, and it satisfies the conservation of flow mass, momentum and continuity in computational regions. Moreover, it is effective for simulation of flow movement under complex topography near hays, and estuaries and for reflection of flood tides and ebb tides.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
北大核心
2006年第4期456-459,共4页
Journal of Hohai University(Natural Sciences)
基金
国家自然科学基金资助项目(50339010)
关键词
浅水方程
非结构同位网格
有限体积法
线边界法
动边界
shallow water equation
non-structured collocated grid
finite volume method, linear boundary method
dynamic boundary
