Effect of Different Channels on Discharge Coefficient of Labyrinth Weirs

In this study, the effect of channel-bed slope and non-prismatic converging channel on discharge coefficient labyrinth weirs is numerically investigated utilizing FLOW-3D model. Numerical simulation results show that modifying weir through both methods improves coefficient. Among selected bed slopes wall, β=4% angle θ=10° yielded highest For a ratio HT/P=0.1, (HT: flow height, P: height) rate for convergence case were 19.22%, 23.9% 22.28%, 25.91% higher than conventional in prismatic channel, respectively. Simultaneous application significantly increases value 28.64% 30.42% compared to case. Therefore, changing wall type these design alterations should be considered design.