Abstract
Waves induced due to partial dam failure in the suddenly enlarged section over a mobile bed are simulated. TVD-WAF scheme combined with HLLC scheme is deployed as a second-order approximate Riemann solver for solving shallow water equations in conjunction with Exner equation. Also, an approach for considering turbulence effects is used based on Boussinesq's turbulent viscosity hypothesis. In the present model, five different bed load movement formulations are used for comparative evaluation of bed load movement. The present model applied for modelling two laboratory tests for dam failure on mobile beds. According to the results of the evaluation, the numerical results of the Ribberink formulation and the Wong and Parker formulation are better than the results of other formulations. In general, the results indicate good agreement between the numerical results and the experimental data both in the water level and bed level simulation in the selected test cases.
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