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Two-phase flow simulation of breaking solitary waves over surface-piercing and submerged conical structures

Xie, Zhihua and Stoesser, Thorsten 2020. Two-phase flow simulation of breaking solitary waves over surface-piercing and submerged conical structures. Ocean Engineering 213 , 107679. 10.1016/j.oceaneng.2020.107679

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Abstract

A two-phase flow model is employed to study three-dimensional (3D) breaking of solitary waves over surface-piercing and submerged conical structures. Details of the wave pre-breaking, overturning, and post-breaking processes are included. The governing equations are discretized by the finite volume method and the PISO algorithm is utilized for the pressure-velocity coupling. The air–water interface is captured using a volume of fluid approach and the Cartesian cut-cell method is implemented to deal with the complex topography of the conical structures. The method is validated first using available experimental data of a solitary wave propagating over a surface-piercing conical island and good agreement between the experiment and simulation data is obtained. The model is then applied to study 3D breaking waves over a submerged conical structure, with 3D wave profiles and surface velocities being presented and discussed. The detailed 3D velocity fields, energy dissipation and transformation during the wave breaking process are presented.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Publisher: Elsevier
ISSN: 0029-8018
Funders: Royal society
Date of Acceptance: 20 June 2020
Last Modified: 09 Sep 2020 12:11
URI: http://orca.cf.ac.uk/id/eprint/134106

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