Numerical study of breaking waves by a two-phase flow model

Xie, Zhihua ORCID: https://orcid.org/0000-0002-5180-8427 2012. Numerical study of breaking waves by a two-phase flow model. International Journal for Numerical Methods in Fluids 70 (2) , pp. 246-268. 10.1002/fld.2690

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Abstract

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 Navier–Stokes equations with the k −ε 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.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Subjects:	T Technology > TC Hydraulic engineering. Ocean engineering
Publisher:	John Wiley & Sons
ISSN:	0271-2091
Last Modified:	02 Nov 2022 10:10
URI:	https://orca.cardiff.ac.uk/id/eprint/97698

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