用结构化语言处理洪水二维计算中的边界问题

Dealing with Boundary Problem in Flood 2-D Calculation with Structured Language

采用结构化较强的Ｃ语言解决洪水演进的二维非恒定流计算中的边界问题，用Ｃ语言的结构体功能描述边界属性，处理边界附近的区域，这样能良好反映实际边界条件；吸收了规则网格和不规则网格各自优点，同时避免两者的不足，建立了复合网格模式，该方法对大面积洪水泛区计算具有较强的适用性．

This paper applies structured language C-language to deal with boundary problem of 2-D unsteady flow calculation in flood development.Using the function of structured C-language can describe the properties of boundary and deal with the area nearby boundary. Therefore, it can reflect the actual boundery-condition and absorb the advantage of regular mesh and irregular mesh, and avoids the defects.It establishes complex mesh model,and especially is suitable for the calculation of large flooded area.