Volume 4 Issue 1 ( March 2017 )

Pages 29-35

Three-dimensional Free Surface Flows Modeled by Lattice Boltzmann Method : A Comparison with Experimental Data

Nik Mohd, Mohamed M. Kamra, Makoto Sueyoshi, Changhong Hu

[ABSTRACT ]

Three-dimensional numerical simulations of strongly nonlinear free surface flows are performed by lattice Boltzmann method (LBM), which features a number of performance-related advantages, particularly concerning data locality and parallel computing. A Multi-Passage-Interface (MPI) multicore processors parallelized free surface LBM solver is applied for the present three-dimensional numerical simulations. A Smagorinsky LES turbulent model serves to capture the small-scale turbulent structures of the flow. Experiments on dam breaking from previous articles are used to compare and verify two-dimensional (2D) and three-dimensional (3D) LBM model. A new experimental setup is also developed in order to observe the three-dimensionality effect. The findings demonstrated that the free surface LBM simulation agrees well with the experiments.

Keywords: Free surface flow; lattice Boltzmann method; MPI

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