A multi-phase SPH model for simulating the floating OWC-breakwater integrated systems

IF 4.2 2区工程技术 Q1 ENGINEERING, CIVIL

Coastal Engineering Pub Date : 2024-11-28 DOI:10.1016/j.coastaleng.2024.104658

Yifan Zhang , Jiapeng Pan , Mengxia Song , Haonan Jiang , Fang He , Can Huang , Ahmad Shakibaeinia

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引用次数: 0

Abstract

Oscillating water column (OWC) devices, a type of wave energy converter, have aroused great interest of researchers in the past decades due to their straightforward configuration and superior durability. In this work, an experiment on a fixed bottom-mounted OWC device is first conducted, and then the multi-phase Smoothed Particle Hydrodynamics (SPH) method with the adaptive spacing resolution technology is developed and applied into the simulation of the OWC simulation. In order to calculate the pressure in the chamber of OWC accurately, two improvements are made to the computational model: 1) a modified gas-related far-field boundary condition; 2) particle refinement near the OWC slot. The numerical results agree with the experimental results, indicating an accurate simulation of both the pneumatic and hydrodynamic process in fixed OWC devices. Subsequently, mooring systems and elastic models are validated and then coupled with the multi-phase SPH-OWC. Utilizing the proposed SPH model, a floating OWC-breakwater system with an elastic curtain below is numerically simulated. Results show that the current multi-phase SPH model can be used to investigate hydrodynamic characteristics of complex floating OWC-breakwater systems.

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浮式owc -防波堤综合系统的多相SPH模型

振荡水柱（OWC）装置是一种波能转换器，由于其结构简单、耐用等优点，在过去的几十年里引起了研究人员的极大兴趣。本文首先在固定的底置OWC装置上进行了实验，然后开发了具有自适应间距分辨技术的多相光滑粒子流体力学（SPH）方法，并将其应用于OWC模拟中。为了准确计算OWC室内压力，对计算模型进行了两方面的改进：1)修正了气相关远场边界条件；2) OWC槽附近的颗粒细化。数值模拟结果与实验结果吻合较好，表明该方法能够较准确地模拟固定OWC装置内的气动和水动力过程。随后，对系泊系统和弹性模型进行验证，然后与多相SPH-OWC相结合。利用SPH模型，对下面有弹性帷幕的浮式owc防波堤系统进行了数值模拟。结果表明，现有的多相SPH模型可用于研究复杂浮式owc -防波堤体系的水动力特性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Coastal Engineering 工程技术-工程：大洋

CiteScore

9.20

自引率

13.60%

发文量

审稿时长

3.5 months

期刊介绍： Coastal Engineering is an international medium for coastal engineers and scientists. Combining practical applications with modern technological and scientific approaches, such as mathematical and numerical modelling, laboratory and field observations and experiments, it publishes fundamental studies as well as case studies on the following aspects of coastal, harbour and offshore engineering: waves, currents and sediment transport; coastal, estuarine and offshore morphology; technical and functional design of coastal and harbour structures; morphological and environmental impact of coastal, harbour and offshore structures.