Experimental study of the discharge capacity of sluice side gates with different geometric shapes

Hydraulic structures are important structures that ensure the transmission, directing, regulation, control and discharge of water. Thanks to these structures, water, which enables life to exist, is used with maximum efficiency. Side sluice gates are one of the important types of these hydraulic structures. Although there are many studies in the literature on frontal flow gates, studies on lateral flow are limited. Most of the studies on side sluice gates have been carried out for classical rectangular gates. Therefore, in this master's study, the subject of the study was investigated experimentally by considering different hydraulic characteristics for side sluice gates with different geometric shapes. Three different side sluice gates with rectangular, triangular and semicircular shapes were used in the study. Nine different dimensions were considered for each shape and twenty-seven side sluice gates were manufactured in total. The side sluice gate opening cross-sectional area and gate opening length of each of the nine side sluice gates manufactured separately for rectangular, triangular and semicircular was designed to be equal to each other, and the experiments were carried out. In order to investigate the hydraulic characteristics of the side sluice gates of different shapes and sizes, a series of 343 experiments were conducted in linear channel and in subcritical flow regime. The dimensionless parameters that significantly affect the discharge coefficient were identified and the effects of these dimensionless parameters on the discharge coefficient were analyzed in detail. It is concluded that although the side sluice gate has the same cross-sectional area and the same side sluice gate opening length, the hydraulic characteristics of the side sluice gate change with the change of geometric shape. The finding of the present study is compared with the results obtained by other researchers. In addition, validity analysis of the developed equations was made. It is concluded that the developed equations can be used with confidence.