2D Numerical Modeling of Movable Bed Dam Break using SPH Method

Document Type : Research Article


1 Graduate Student, Faculty of Civil and Environmental Engineering, Tarbiat Modares University, Tehran, Iran

2 Professor, Faculty of Civil and Environmental Engineering, Tarbiat Modares University, Tehran, Iran


Smoothed Particle Hydrodynamic method is a Lagrangian numerical particle method, best fitted for free surface hydrodynamics. SPHysics is one of the most well-known computer models based on SPH. However, this open source code is limited to one-phase Newtonian fluid problems. In this research, after developing the standard serial SPH code to a two-phase non-Newtonian model, the movable bed dam break problem has been modeled. An added pressure term is used in the pressure equation of state. Afterward, the model has been used for various problems and the validity of results was evaluated by related numerical models and experiments. Finally, the model has been challenged with modeling of dam break movable bed material by non-Newtonian Bingham model and compared with MPS method and experimental results.


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