Numerical simulation of flow and dam body sediment over a movable bed due to an earthfill dam break

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 literature. successfully captures temporal changes in measured depths, pressures, wave fronts, arrival times. then applied simulate result artificial having obstacle at its downstream section. show that there noticeable decrease shock pressures all points around increase water levels. moves while spreading. It takes longer time for laden reach obstacle. investigation formed by different soils shows soil type has minor effect can raise levels change morphology