Paper Information

Journal:   INTERNATIONAL JOURNAL OF ENGINEERING   JULY 2012 , Volume 25 , Number 3 (TRANSACTIONS A: BASICS); Page(s) 239 To 247.
 
Paper: 

SIMULATION OF GRAVITY WAVE PROPAGATION IN FREE SURFACE FLOWS BY AN INCOMPRESSIBLE SPH ALGORITHM

 
 
Author(s):  AMANIFARD -*, MAHNAMA S.M., NESHAEI S.A.L., MEHRDAD M.A., FARAHANI M.H.
 
* MECHANICAL ENGINEERING DEPARTMENT, UNIVERSITY OF GUILAN, RASHT, IRAN
 
Abstract: 

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.

 
Keyword(s): SMOOTHED PARTICLE HYDRODYNAMICS (SPH), LAGRANGIAN METHOD, WAVE PROPAGATION, FREE SURFACE
 
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