振荡水柱装置中谐振腔的性能

Q4 Energy
Juan D. Parra-Quintero, A. Rubio-Clemente, E. Chica
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引用次数: 0

摘要

哥伦比亚利用海洋电力潜力前景广阔,振荡水柱(OWC)是一个值得探索的选择。波浪能转换过程通常包括两个阶段:波浪能在空气室中转换为气动能,以及使用与发电机耦合的自整流空气涡轮机将气动能转换为电能。为了提高初级阶段的效率,本研究旨在利用基于Reynolds平均Navier-Stokes方程的数值模型和流体体积法进行自由表面模拟,以确定OWC气室的水动力性能。燃烧室的几何形状是基于u形的OWC。实验结果表明,最大效率为66.8%,腔室自由面平均速度为0.17 m/s。将模拟得到的波高数值计算结果与已有文献的解析表达式进行比较,验证了数值计算结果的正确性。根据不同的波浪特性,优化不同的腔室形状参数是提高OWC运行效率的关键。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Performance of Resonant Chambers in Oscillating Water Column Devices
The utilization of marine power potential in Colombia holds a great promise, and the oscillating water column (OWC) is one option that deserves to be explored. The wave energy conversion process using an OWC typically involves two stages: the conversion of wave power to pneumatic power in an air chamber, and the conversion of pneumatic power to electricity using a selfrectifying air turbine coupled to an electric generator. In order to improve the efficiency of the primary stage, this study is aiming at determining the hydrodynamic performance of an OWC air chamber using a numerical model based on the Reynolds Averaged Navier-Stokes equations and the Volume of Fluid approach for free surface simulation. The chamber geometry was based on a U-shaped OWC. The maximum efficiency and the mean velocity of the chamber free surface were found to be 66.8% and 0.17 m/s, respectively. The numerical results for the wave height obtained through simulation were validated by comparing them to analytical expressions reported in the existing literature, and a significant level of agreement was observed. Optimizing the chamber shape parameters for the specific wave characteristics is concluded to be crucial to enhance the operating efficiency of the OWC.
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来源期刊
Renewable Energy and Power Quality Journal
Renewable Energy and Power Quality Journal Energy-Energy Engineering and Power Technology
CiteScore
0.70
自引率
0.00%
发文量
147
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