The design floods of several reservoirs were recently re-evaluated and the revised spillway outflow could result in dam overtopping with catastrophic consequences for some embankment structures. Herein a physical study was performed on flat and pooled stepped spillways with a slope typical of embankments (θ = 26.6◦) and four stepped configurations were tested: a stepped spillway with flat horiz...

Nonlinear weirs are among the major structures used in water transfer. Thus, these have been subject of various studies. This study investigates effect flow splitters on discharge performance trapezoidal and triangular labyrinth one cycle. delves into effects installed crest one-cycle using numerical methods (Flow-3D) physical models. In model, two, four, or six vanes were placed at regular int...

A dam spillway is a hydraulic structure that appropriately and safely diverts the outflow to downstream, so that the dam stability and passing of flood flows can be guaranteed. Compared to straight crest spillway, an Ogee spillway with curvature in plan in a fixed-width can pass more flow. Therefore under the low hydraulic heads and the need for a smaller place in plane, they are considered as ...

Arthroscopy has revolutionized the practice of orthopaedics by providing the technical capability to examine and treat intra-articular abnormalities. The development of wrist arthroscopy was a natural progression from the successful application of arthroscopy to other, larger joints. The wrist is a labyrinth composed of 8 carpal bones, multiple articular surfaces with 28 intrinsic and extrinsic...

In the present study, flow over flat and pooled stepped spillways was simulated three dimensionally. The VOF method and k- ε (RNG) turbulent model was used to simulate the flow over the stepped spillway. The results indicated that the numerical model was acceptably capable of simulating the flow over the pooled and flat stepped spillways for different discharges. Following that, the effect of d...

Abstract Most of the studies on labyrinth weir were carried out in laboratory, and regression models have been developed for discharge coefficient terms pertinent independent parameters. It is difficult to obtain an exact analytical solution head relationship due existence 3D flow. Consequently, various forms soft computing techniques are used as appropriate alternative achieve greater accuracy...