In the present study, the behavior of hydraulic parameters is investigated for a vertical drop equipped with a horizontal screen. A total of 105 experiments were carried out over a range of parameters, which comprise pool depth, downstream depth, wetted length of the screen, relative mixing length, and energy dissipation with discharge variability of flow for three different drop heights and two porosity ratios. The results indicate that the use of horizontal screens in vertical drops can increase the relative pool depth, the relative downstream depth, and relative energy dissipation compared with a plain vertical drop. It was also found that screens significantly reduce the downstream Froude number from 3.7–6.1 to 0.67–1. A comparison of the porosity of the screens also indicates that the porosity of the screens has an insignificant effect on the performance of the vertical drop. An increase in the porosity of the screens reduces the relative wetted length of horizontal screens and the relative mixing length.

在本研究中，对配备水平筛的垂直降落的水力参数行为进行了研究。在三个参数范围内进行了总共105个实验，这些参数包括池深度，下游深度，筛网的湿润长度，相对混合长度和能量耗散，对于三种不同的液滴高度和两种孔隙率，流量具有流量可变性。结果表明，与普通的垂直水滴相比，在垂直水滴中使用水平筛可以增加相对池深度，相对下游深度和相对能量耗散。还发现，滤网可将下游弗洛德数从3.7-6.1显着降低到0.67-1。筛孔率的比较还表明筛孔率对垂直落差的性能影响不大。筛孔的增加增加了水平筛的相对湿润长度和相对混合长度。