Simulation of 2-D Dam Break Using Improved Incompressible Smoothed Particle Hydrodynamics Based on Projection Method

Abstract:

This paper deals with numerical modeling of water flow which is generated by the break of a dam. The problem is solved by applying a new Incompressible Smoothed Particle Hydrodynamics (ISPH) algorithm based on projection method. The proposed ISPH model has two steps. In the first step, the incompressibility of fluid is maintained regarding to the changes of intermediate and initial particles densities at the first half-time step (stability step). In the second step, by computing the divergence of the intermediate secondary velocity at the second half-time step (accuracy step), the incompressibility is satisfied completely. In fact, by using this method both stability and accuracy are increased. The simulation illustrates the formation and subsequent propagation of a wave over the horizontal plane. It is shown that the model predictions compare well with experimental data.

• Periodical: Applied Mechanics and Materials (Volume 390)
• Pages: 81-85
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.390.81
• Online since: August 2013
• Authors: Majid Pourabdian, Mehran Qate, Alireza Javareshkian, Ali Farzbod
• Keywords: Dam-Break Problem, ISPH, Projection Method, Smoothed Particle Hydrodynamic (SPH)

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