贴体坐标系下平面二维多连通域非恒定水流数学模型  

A Numerical Model of Current Field Containing Any Number of Arbitrary Bodies Using Body-Fitted Coordinate Systems

作　　者：王震[1] 张二骏[1] 

机构地区：[1]河海大学航运及海洋工程系

出　　处：《河海大学学报（自然科学版）》1996年第3期49-54,共6页Journal of Hohai University(Natural Sciences)

摘　　要：从流场数值模拟的需要出发，用贴体坐标法研制了水域中含有岛屿、汊道等情况的非恒定水流数学模型．文中研讨了正交网格的生成方法、多连通域的网格生成方法、调节因子的合理确定以及贴体坐标系下水流运动基本方程的正确形式．模型验证表明，模型对狭长海湾和弯曲河道流场的模拟是十分有效的．To meet the needs of simulating current fields, a model of 2D unsteady flow in the water field containing any number of arbitrary islands, river branches, etc. is developed by using body-fitted coordinate systems. Some problems on the body-fitted coordinate method used for the water field, such as the method of generating orthogonal grids, the method of generating grids in multi-connected fields, the range of the control function value, are discussed. The results show that the model is suitable for narrow and long bays and winding rivers.

关 键 词：非恒定流 贴体坐标系 数学模型 

分 类 号：TV133.2[水利工程—水力学及河流动力学]