WIT Press


Numerical Investigation Of Sandy Beach Evolution Using An Incompressible Smoothed Particle Hydrodynamics Method

Price

Free (open access)

Paper DOI

10.2495/CP090061

Volume

126

Pages

9

Page Range

63 - 71

Published

2009

Size

565 kb

Author(s)

N. Amanifard, S. M. Mahnama, S. A. L. Neshaei & M. A. Mehrdad

Abstract

The current work presents an incompressible smoothed particle hydrodynamics (SPH) model to simulate sandy beach evolution. The Navier-Stokes equations are solved in a Lagrangian framework using a three-step fractional method. In the first step, a temporary velocity field is provided according to the relevant body forces. This velocity field is renewed in the second step to include the viscosity effects. A Poisson equation is employed in the third step as an alternative for the equation of state in order to evaluate pressure. The present method is validated by solving a free surface problem and comparing the computational results with the experimental results, as well as numerical data that is evaluated from the standard SPH method. Then, based on an experimental model, the simulation of sandy beach evolution has been investigated by this method. Comparison of the computed results with previous studies that are reported in coastal engineering references implies the capability of the method for the simulation of such complex flows. Keywords: smoothed particle hydrodynamics (SPH), Lagrangian method, free surface, sandy beach evolution.

Keywords

smoothed particle hydrodynamics (SPH), Lagrangian method, free surface, sandy beach evolution