期刊
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS
卷 70, 期 2, 页码 246-268出版社
WILEY
DOI: 10.1002/fld.2690
关键词
breaking waves; two-phase flow model; Reynolds-averaged Navier-Stokes (RANS)equations; VOF method; Cartesian cut cell method; turbulence modelling
类别
资金
- Marie Curie EST fellowship
A two-phase flow model, which solves the flow in the air and water simultaneously, is presented for modelling breaking waves in deep and shallow water, including wave pre-breaking, overturning and post-breaking processes. The model is based on the Reynolds-averaged NavierStokes equations with the k -epsilon turbulence model. The governing equations are solved by the finite volume method in a Cartesian staggered grid and the partial cell treatment is implemented to deal with complex geometries. The SIMPLE algorithm is utilised for the pressure-velocity coupling and the air-water interface is modelled by the interface capturing method via a high resolution volume of fluid scheme. The numerical model is validated by simulating overturning waves on a sloping beach and over a reef, and deep-water breaking waves in a periodic domain, in which good agreement between numerical results and available experimental measurements for the water surface profiles during wave overturning is obtained. The overturning jet, air entrainment and splash-up during wave breaking have been captured by the two-phase flow model, which demonstrates the capability of the model to simulate free surface flow and wave breaking problems.Copyright (c) 2011 John Wiley & Sons, Ltd.
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