bendway weirs are an important tool in multi-purpose erosion control and are implemented to control erosion, restore streams, and improve habitat. these structures create a hydraulic effect that reduces erosion on the outer bank of a bend by reducing flow velocities near the outer bank and reduce the concentration of currents on the outer bank creating better current alignment through the bend....

This paper presents the effects of two-dimensional bathymetry on evolution skewness and kurtosis surface elevation velocity field in long-crested irregular waves propagating over a circular shoal submerged bar with semicircular step. For shoal, we show that has local maximum top shoal. We find horizontal similar behaviour to elevation, but two maxima at different locations lee side step, which ...

Andean ecosystems provide important hydrological services for downstream communities. Due to this importance, several studies have been carried out in recent years, with emphasis on processes identification and land use change impacts. In studies, but also the operation of small-scale irrigation drinking water projects, small streams equipped compound, sharp-crested weirs discharge estimation. ...

Current ecological surveys for great crested newts are time-consuming and expensive and can only be carried out within a short survey window. Additional survey methods which would facilitate the detection of rare or protected species such as the great crested newt (Triturus cristatus) would be extremely advantageous. Environmental DNA (eDNA) analysis has been utilized for the detection of great...

Weirs have widely been used for the flow measurement, flow diversion and its control in the open channels. Attempts have been made to study flow over different shapes of normal weirs, side weirs and oblique weirs. This paper is connected with the development of the discharge coefficient measurement. In the present study four different weirs in different height are considered for validation purp...

This study integrates a large eddy simulation (LES) model and volume of fluid (VOF) method to simulate the free-surface flows over inflexible circular-crested dams different shapes. The simulated water depths pressures on dam surface are validated by results laboratory experiments. Then numerical examines effects Reynolds number hydrodynamic force discharge coefficient. reveal that time-average...