%0 Journal Article
%T Simulation of Gravity Wave Propagation in Free Surface Flows by an Incompressible SPH Algorithm
%J International Journal of Engineering
%I Materials and Energy Research Center
%Z 1025-2495
%A Mahnama, S.M.
%A Neshaei, S.A.L.
%A Mehrdad, M.A.
%A H. Farahani, Mehrdad
%A Amanifard, Nima
%D 2012
%\ 07/01/2012
%V 25
%N 3
%P 239-248
%! Simulation of Gravity Wave Propagation in Free Surface Flows by an Incompressible SPH Algorithm
%K Smoothed Particle Hydrodynamics (SPH)
%K Lagrangian Method
%K Wave propagation
%K Free surface
%R
%X This paper presents an incompressible smoothed particle hydrodynamics (SPH) model to simulate wave propagation in a free surface flow. 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. This Poisson equation considers a trade-off between density and pressure which is utilized in the third step to impose the incompressibility effect. The computations are compared with the experimental as well as numerical data and a good agreement is observed. In order to validate proposed algorithm, a dam-break problem is solved as a benchmark solution and the computational results are compared with the previous numerical ones.
%U https://www.ije.ir/article_72023_9ea5ee5b5060c78e07ee1d9b770811ae.pdf