Modified Moving Particle Semi-implicit methods for the prediction of 2D wave impact pressure |
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| Authors: | A Khayyer H Gotoh |
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| Institution: | Department of Urban and Environmental Engineering, Kyoto University, Katsura Campus, Nishikyo-ku, Kyoto 615-8540, Japan |
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| Abstract: | As a gridless particle method, the MPS (Moving Particle Semi-implicit) method has proven useful in a wide variety of engineering applications including free-surface hydrodynamic flows. Despite its wide range of applicability, the MPS method suffers from some shortcomings such as non-conservation of momentum and spurious pressure fluctuation. By introducing new formulations for the pressure gradient and a new formulation of the source term of the Poisson Pressure Equation (PPE), and by allowing a slight compressibility, we have proposed modified MPS methods for the prediction of wave impact pressure on a coastal structure. The improved performance of the modified methods is shown through the simulation of numerous wave impact problems (including the impacts by a dam break flow, a flip-through and two cases of slightly-breaking waves) in comparison with the experimental data. |
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| Keywords: | MPS method Modified MPS methods Particle method Wave impact pressure |
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