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NUMERICAL SIMULATION OF FREE SURFACE MUDFLOW USING INCOMPRESSIBLE SPH | ||
| Iranian Journal of Science and Technology Transactions of Civil Engineering | ||
| شناسنامه علمی شماره، دوره 37، شماره 1، اردیبهشت 2013، صفحه 77-95 اصل مقاله (890.4 K) | ||
| شناسه دیجیتال (DOI): 10.22099/ijstc.2013.940 | ||
| چکیده | ||
| 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. | ||
| کلیدواژهها | ||
| ISPH؛ gate؛ Hydraulic jump؛ dambreak؛ mudflow؛ multi-phase flow | ||
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