A NUMERICAL STUDY OF WATER PROPAGATION AND BREAKING USING SPH METHOD

• Main Authors: COELHO J. G., OLIVEIRA T. F., BRASIL JR. A. C. P, MARUZEWSKI P.
• Format: Article
• Language: English
• Published: Taylor's University 2017-06-01
• Series: Journal of Engineering Science and Technology
• Subjects: SPH; Free surfaces; Wave propagation; Meshless Method; Fluid mechanics.
• Online Access: http://jestec.taylors.edu.my/Vol%2012%20issue%206%20June%202017/12_6_11.pdf

A breaking wave is a violent natural event that involves highly complex phenomena, such as large deformation of free surface, turbulence, vortex generation, strong interaction between wave and structures, etc. In this work a wave breaking over an inclined surface is simulated using the Smoothed Particle Hydrodynamics (SPH). SPH is a meshless method that uses a Lagrangian referential to account the forces acting over a fluid particle. The formalism of SPH is based on the idea that the flow can be considered as a set of parts of fluid volume in motion using the concept of particles. This work uses a Weakly Compressible Smoothed Particle Hydrodynamics (WCSPH), where the pressure field is determined by a state equation. The code is validated with several benchmark cases, in which the most relevant parameters for the numerical stability of the analyses are varied. Finally, the model is applied to the simulation of breaking waves in coastal regions, determining shear stresses, important parameter for various applications in engineering, such as erosion.