Two numerical particle models, the Smoothed Particle Hydrodynamics (SPH) and Moving Particle Semi-implicit (MPS) methods, coupled with a
sub-particle scale (SPS) turbulence model, are presented to simulate free surface flows. Both SPH and MPS methods have the advantages in that
the governing Navier¿Stokes equations are solved by Lagrangian approach and no grid is needed in the computation. Thus the free surface can be
easily and accurately tracked by particles without numerical diffusion. In this paper different particle interaction models for SPH and MPS methods
are summarized and compared. The robustness of two models is validated through experimental data of a dam-break flow. In addition, a series of
numerical runs are carried out to investigate the order of convergence of the models with regard to the time step and particle spacing. Finally the
efficiency of the incorporated SPS model is further demonstrated by the computed turbulence patterns from a breaking wave. It is shown that both
SPH and MPS models provide a useful tool for simulating free surface flows.
| Identifer | oai:union.ndltd.org:BRADFORD/oai:bradscholars.brad.ac.uk:10454/471 |
| Date | January 2005 |
| Creators | Shao, Songdong |
| Source Sets | Bradford Scholars |
| Language | English |
| Detected Language | English |
| Type | Article |
| Rights | © 2005 International Association of Hydraulic Engineering and Research. Reproduced in accordance with the publisher's self-archiving policy. |
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