It is very important to understand the vertical transverse velocity distribution of the bend with the guide wall set on the axis to explain the improvement mechanism of the flow characteristics in the bend. Therefore, the effect of the guide wall on the transverse velocity under different parameters of the bend was presented. Considering the feature design of channel bend in real engineering project, axis, bottom slopes and discharges with two flow conditions were used as parameters. Analysis and observation showed the significant impact on the transverse velocity, the guide wall impact on both absolute value and the direction of the transverse velocity distribution and present certain laws. The absolute value is influenced by the change of velocity direction, while the direction is affected by the inlet flow condition. In contrast, the transverse velocity is effectively reduced by the installation of a guide wall, and the water depth differences are reduced as well. Therefore, the impact of the guide wall on the flow characteristic especially the transverse velocity was proved and these results are practically useful in channel bend design.

了解导流壁设置在轴线上的弯管的垂直横向速度分布，以解释弯管内流动特性的改善机理，这一点非常重要。因此，提出了在不同弯曲参数下导向壁对横向速度的影响。考虑到实际工程中河道弯道的特征设计，以轴，底坡和两种流量条件下的流量为参数。分析和观察表明，这对横向速度有显着影响，导向壁对横向速度分布的绝对值和方向都有影响，并表现出一定规律。绝对值受速度方向变化的影响，而方向受入口流动条件的影响。相反，通过安装导向壁可以有效地降低横向速度，并且还可以减小水深差。因此，证明了导向壁对流动特性特别是横向速度的影响，并且这些结果在通道弯曲设计中实际上是有用的。