Abstract Weirs are one of the most common hydraulic structures used in water engineering projects. In this research, a group method data handling (GMDH) was developed to estimate energy dissipation flow passing over labyrinth weirs with triangular and trapezoidal plans. To compare performance model other types soft computing models, multilayer perceptron neural network (MLPNN) developed. The di...

We present a platform for parallelized manipulations of individual polarizable micron-scale particles (i.e., microparticles) that combines negative dielectrophoretic forcing with the passive capture of hydrodynamic weir-based trapping. Our work enables manipulations using ejection- andor exclusion-based methods. In ejection operations, we unload targeted weirs by displacing microparticles from ...

Piano Key Weirs (PKWs) are an alternative to linear overflow structures, increasing the unit discharge for similar heads and spillway widths. Thus, they allow to operate reservoirs with elevated supply levels, thereby providing additional storage volume. As they are relatively novel structures, few design criteria are available. Hence, physical model tests of prototypes are required. This study...

This investigation deals with the mechanics of movement singular quartz gravel and coarse sand riverbed particles upstream over inlet key three Type A piano weir (PKW) models, which were recorded a high-speed camera. Acoustic Doppler velocimeter was used to obtain bed shear stress. The sediment threshold regime compared previous investigations found be within ranges. Generally, particle deceler...

Abstract Labyrinth weirs are complex hydraulic structures. They have been widely used as a water regulator and to increase discharge in channels spillway dams. an economical effective method pass large floods. In addition, they reduce the requirements of structural footprint. These features make them interesting appropriate choice capacity discharge. Several factors affect performance labyrinth...