【摘要】 基于平面二维非恒定水流方程 ,结合实际应用需要 ,建立了一种守恒性较好的平面二维水流数学模型 ,并在概化河道和某一天然河道上对所建立的模型进行了验证 ,对验证结果和模型的性能作出了分析和评价 ,证明所建立的模型能处理复杂的边界条件 ,并能保证水量和动量守恒 ,具有良好的实用和推广价值更多还原

【Abstract】 A set of horizontal 2D mathematical model for unsteady hydraulic flow based on finite difference method has been developed. It can simulate momentum equation of 2D flow and give rational result even the boundary condition is very complex. Several simulating results are given to demonstrate the applicability of the numerical model. Mass conservation and momentum conservation are proved in flow process.更多还原