【摘要】 通过建立一维涌潮数学模型,以概化矩形断面河道为对象,对不同糙率下的潮波变形进行分析比较. 计算得出随糙率增大,潮波上溯过程中,波形变化缓慢,涌潮强度、高度及影响范围减小,糙率大到一定程度将没有涌潮发生,得到河道摩阻对涌潮的阻碍规律.更多还原

【Abstract】 Based on the ideal rectangular cross-section watercourse, a one-dimensional tidal bore model was established. The processes of tidal wave deformation under different roughnesses were analysed and compared. Computational result shows that the deformation of tidal wave is changed slowly with the roughness increasing. The intensity, height and coverage of the tidal bore is reduced during the tidal wave is traced back in the course. And when the roughness increases more, the tidal bore will not occur. The law that roughness affects alteration of tidal bore was obtained.更多还原