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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/46579

Title: Using RANS to simulate vortex generation and dissipation around impermeable submerged-double-breakwaters
Authors: Tai-WenHsu;Chih-MinHsieh;Robert R.Hwang
Contributors: 國立臺灣海洋大學:系統工程暨造船學系
Keywords: Submerged double breakwaters;Vortex generation and dissipation;Reynolds Averaged;Navier–Stokes equations
Date: 2004
Issue Date: 2018-05-24T06:20:38Z
Publisher: Coastal Engineering
Abstract: Abstract:In this paper, a Reynolds Averaged Navier–Stokes (RANS) model was developed to simulate the vortex generation and dissipation caused by progressive waves passing over impermeable submerged double breakwaters. The dynamics of the turbulence are described by introducing a k–ɛ model with Boussinesq closure. The Height Function (HF) is implemented to define the free-surface configuration. The governing equations are discretized by means of a finite volume method based on a staggered grid system with variable width and height. The feasibility of the numerical model was verified through a series of comparisons of numerical results with the existing analytical solutions and the experimental data. The good agreements demonstrate the satisfactory performance of the developed numerical model. The flow separation mechanism both near the upstream and the downstream edges of the obstacles demonstrates the physical and expected nature of development of the flow. The present model provides an accurate and efficient tool for the simulation of flow field and wave transformation near coastal structures without breaking.
Relation: 51(7) pp.557-579
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/46579
Appears in Collections:[系統工程暨造船學系] 期刊論文

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