【摘要】 本文根据粘性流体的非滑移条件,提出了平衡情况下恒定均匀二维明渠流中非均匀悬沙任一粒径组的新的基本方程,进行了数值求解,指出细颗粒组在一定条件下其含沙量沿垂线分布会出现上浓下稀的特殊现象,并用实测资料进行了验证.另外还对对数流速分布公式所反映的掺长进行了讨论.更多还原

【Abstract】 Considering the characteristics of viscous fluid,a new differential equation for vertical suspended sediment concentration distribution of non-uniform particles is developed.Numerical result reveals that the concentration of finer particle group near surface is bigger than that near the bed under certain condition.The above mentioned prediction is confirmed by field measuring data.更多还原