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Paper Information

Journal: INTERNATIONAL JOURNAL OF ENGINEERING | Year:2012 | Volume:25 | Issue:3 (TRANSACTIONS A: BASICS) | Start Page:239 | End Page:247

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Information Journal Paper

Title

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

Pages

 Start Page 239 | End Page 247

Keywords

SMOOTHED PARTICLE HYDRODYNAMICS (SPH)

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.

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