The improvement and capacity increasing of hydropower stations have brought attention to the intake structures of water-cooling systems, which suction water from alluvial channels. The accumulation of sediment in the vicinity of these intake structures poses significant operational challenges, such as strong vortices, and irregular flow distribution at pump intakes. One effective approach is the implementation of a sediment deflector system using baffle columns as avoided wall (L-Shape profile) with specific dimensions and arrangement to allow water to go through while preventing sediment ingress into the power station intakes. L-Shape profile means double voided walls, one of them parallel to flow direction while the other wall perpendicular to the flow direction in the upstream of the intake structure. The objective of this study is to optimize the performance of the baffle columns of the deflector system in mitigating sedimentation in front of the intake structures. To achieve this, an undistorted physical model with scale 1:50 is utilized to analyze the impact of a defined angle between the two voided walls of the deflector system. Three trials by changing the angle of the double voided walls (L-Shape profile) from 90° to 120°,135°, and 150°. The results of this study indicate that as the inclination angle of the deflector system increased to 150°, it resulted in uniform flow efficiency in the direction of the flow, less accumulative sedimentation ingress the intake.

水电站的改进和容量的增加引起了人们对从冲积河道吸水的水冷系统的进水结构的关注。这些进水结构附近沉积物的积累带来了重大的操作挑战，例如强涡流和泵进水口处的不规则流量分布。一种有效的方法是实施沉积物偏导系统，使用具有特定尺寸和布置的挡板柱作为避免墙（L形轮廓），以允许水通过，同时防止沉积物进入发电站进水口。 L型轮廓是指在进水结构上游的双空隙壁，其中一个壁平行于流动方向，而另一个壁垂直于流动方向。本研究的目的是优化导流系统挡板柱的性能，以减轻进水结构前面的沉积。为了实现这一目标，使用比例为 1:50 的未扭曲物理模型来分析偏转器系统的两个空隙壁之间的定义角度的影响。通过将双空隙壁（L 形轮廓）的角度从 90° 更改为 120°、135° 和 150° 进行了三次试验。研究结果表明，当导流系统的倾角增加到150°时，流动方向上的流动效率均匀，进水口的累积沉积量减少。