平面二维河床冲淤计算有限体积法

Limit volume method for calculation of 2-D river channel sediment and erosion

给出了边界层坐标系下平面二维河床冲淤计算数学模型方程 ,并用河势贴体正交曲线二维网格形式来划分计算区域 ,模型控制方程及定解条件采用有限体积法进行离散 ,数值求解基于SIMPLE算法。该模型用武汉河段天然实测资料进行了验证 。

By using 2?D river regime?fitted orthogonal quadrilateral grid to divide calculating zones and through limit volume method to separate the control model equations and their given solution conditions, with SIMPLE algorithm method in solving equations numerically, the 2?D mathematic model for sediment and erosion calculation of river channel under boundary layer coordinates was presented. This model was employed in simulation Wuhan reach and was verified by measured data. Its applications in other projects were also proved reasonable.