Author/Authors :
GHADAMPOUR, Z. shiraz university - Department of Civil and Environmental Engineering, شيراز, ايران , TALEBBEYDOKHTI, N. shiraz university - Environmental Research and Sustainable Development Center - Department of Civil and Environmental Engineering, شيراز, ايران , HASHEMI, M. R. shiraz university - Department of Water Engineering, شيراز, ايران , HASHEMI, M. R. Bangor University - School of Ocean Sciences, UK , NIKSERESHT, A. H. shiraz university of technology - Department of Mechanical Engineering, شيراز, ايران , NEILL, S. P. Bangor University - School of Ocean Sciences, UK
Abstract :
In this paper, Incompressible SPH (ISPH) is used to simulate free-surface mudflow for two case studies, including dambreak and flow under a gate. The mixture of water and sediment in mudflow is treated as a non-Newtonian fluid. Mass and momentum conservation equations in a 2-D Lagrangian frame, along with the Herschel-Bulkley rheology model, were solved to simulate mudflow using ISPH. Further, a Large Eddy Simulation (LES) model was used to evaluate the effect of turbulence on the free surface flow for these cases. The divergence-free velocity projection method was applied to enforce incompressibility of SPH. The results of the ISPH modeling compared well with experimental data and FVM-VOF results. The capability of the ISPH Lagrangian numerical model to capture large deformations makes it a powerful and efficient method for simulating mudflow case studies.
Keywords :
ISPH , gate , hydraulic jump , dambreak , mudflow , multi , phase flow
