Uncertainties inherent in gate-opening speeds are rarely studied dam-break flow experiments due to the laborious experimental procedures required. For stochastic analysis of these mechanisms, this study involved 290 tests performed a flume via varying gate between 0.20 and 2.50 m/s; four pressure sensors embedded bed recorded high-frequency bottom pressures. The obtained data were processed det...

We describe herein a useful model for assessing the environmental impact of the breakage of earthen dams used to retain leachate fluids. To create this model, we analyzed three parameters: (1) the characteristics of both the earthen dam and the leachate; (2) the behavior of the leachate cascade resulting from breakage of the dam; and (3) the environmental effect of the resulting pollution. To a...

The propagation of dam-break waves on different rough beds was observed to be quasi-steady in the range $11.3 < x/h_{dam} 18.8$ , where $x$ is measured from dam position. These speeds converge with steady ideal fluids model Stoker ( Water Waves 1957, Interscience) when tailwater depth $h_2$ becomes greater than ${\sim }0.5k_s$ $0.001< k_s/h_{dam}< 0.2$ $k_s$ roughness and $h_{dam}$ beh...

The transition from a purely inertial to viscous liquid slumping induced by dam-break flow over horizontal surface is highlighted and characterized as specific adaptive regime, during which the regime progressively invades entire current.

This paper presents the numerical simulations of flow and dam body sediment transport over a movable bed due to an earthfill break. The RANS equations, together with k-ω SST turbulent model, are employed. phase characteristic parameter is used as phases air, water, sediment, bulk body. system equations solved numerically using PISO algorithm. model first verified break experimental data from li...

Dam-break is a serious disaster resulting in severe damage to downstream communities. Therefore, analyzing the affected range and evolution process of dam-break floods advance valuable. However, difficulties challenges lie complexity breaking earth-rock dams, uncertainty floods, geographical variability. Given this, objective this study analyze characteristics flood evolution. The chooses Cheng...

This data article presents a rich original experimental video sources and wide collections of laboratory on water levels, sediment depths wave front celerity values arose from different multiphase dam-break scenarios. The required shock waves in highly silted-up reservoirs with various initial up- down-stream hydraulic conditions is obtained directly high-quality videos. multi-layer were record...

Hydraulics has been at the forefront of science for centuries. In this paper, new exciting developments are presented in terms of energy dissipation and multiphase flows. These include the hydraulic design of rectangular dropshafts and stepped chutes for embankment dams, and new air-water studies of spillway flows and dam break waves. The findings demonstrate innovative hydraulic research which...

The Manning friction coefficient as a one-dimensional (1D) openchannel flow parameter is determined from a series of two-dimensional (2D) simulations of the flow on steep slopes using a computational hydraulic solver derived from a minimal intervention strategy (MIS2D). Computations are also conducted for the oblique dam-break waves to evaluate the performance of MIS2D. The results are compared...

The diversity of the landslide dam structure will result in difference body’s seepage. In this paper, based on two kinds soil bodies different particle gradations, fourteen groups structures are designed to generalize seepage developments and breaking processes. study shows that saturation evolution characteristics dam's have a considerable influence dam’s characteristics. An empirical formula ...