Numerical and Experimental Study of Dam-Break Flood Propagation and Its Implication to Sediment Erosion

Abstract

Regarding the hydrodynamics, within the past two decades it has become popular in numerical modeling of freesurface flow to adopt a Reynolds-averaged Navier-Stokes approach, where the volume of fluid (VOF) method is utilized to track the evolution of free-surface. However, this robust numerical model has not been widely applied to the study of sediment transport processes. In this study, we shall extend the numerical model to simulate suspended sediment transport and study the erosion pattern during the initial stage of the dam break flow. We also conducted a series of experiments in a horizontal channel of rectangular section and recorded the snap shots of surface profiles of a dam-break wave during the initial stage of dam-break. Measured data is utilized here to study the hydrodynamics and to validate the numerical model.

Fully coupled free‐surface flow and sediment transport modelling of flash floods in a desert stream in the Mojave Desert, California

“…We used the experimentally measured data of Hsu, Torres‐Freyermuth, Hsu, and Hwung (), who conducted two dam‐break scenarios in a 26.59‐m‐long, 0.37‐m‐wide, and 0.6‐m‐deep flume, to validate the flow solver. In this test case, a gate was used to separate bodies of water with different depths within the flume.…”

“…In both scenarios, the water depth in the upstream region of the flume was 0.3 m. In contrast, the water depths downstream of the gate for Scenarios 1 and 2 were 0.03 m and 0.015 m, respectively. Using an appropriate data acquisition apparatus, they recorded the evolution of the water surface profiles downstream of the gate for both scenarios (Hsu et al, ).…”

Parameter Calibration Method Based on Screw Theory for Articulated Coordinate Measuring Arm

“…In addition, Hayati and Mirmirani [2] point out the discontinuity and non-proportionality of the D-H model while robot manipulator is parallel or nearly parallel. For this reason, many other researchers have proposed the MD-H(Modified Denavit-Hartenberg) parameter model [3]. But they still exist similar shortcomings.…”