Dams and other flow control structures constitute obstacles to upstream downstream aquatic habitats, reducing life-cycle success even eliminating diadromous potamodromous fish species from river basins. Providing effective passage past hydroelectric dams is critical for restoring habitat connectivity sustaining populations of species. Surface water release over spillways in diverting turbines e...

Vortex drop shaft (VDS) spillways are eco-friendly hydraulic structures used for safely releasing flood. However, due to the complexity of three-dimensional rotational flow and lack suitable measuring devices, current experimental work cannot interpret behavior reliably inside VDS spillway, consequently CFD study on a spillway with an elliptical tangential inlet was conducted further discern in...

Abstract The current paper deals with the performance evaluation of application three soft computing algorithms such as adaptive neuro-fuzzy inference system (ANFIS), backpropagation neural network (BPNN), and deep (DNN) in predicting oxygen aeration efficiency (OAE20) gabion spillways. Besides, classical equations, namely multivariate linear nonlinear regressions (MVLR MVNLR), including previo...

Three-dimensional (3D) simulations using the smoothed particle hydrodynamics (SPH) method were performed for smooth and stepped spillways with converging walls, in order to evaluate influence of wall deflection step macro-roughness on main non-aerated flow properties. The encompassed a 1V:2H sloping spillway, convergence angles 9.9° 19.3°, discharges corresponding skimming regime, chute. overal...