Three-dimensional numerical simulation of a cylindrical oscillating water column (OWC) device placed in a wave flume

被引：7

作者：

Zhao, Ming ^{[1
]}

Palmer, Heath ^{[1
]}

Dhamelia, Vatsal ^{[1
]}

Wu, Helen ^{[1
]}

机构：

[1] Western Sydney Univ, Sch Engn Design & Built Environm, Penrith, NSW, Australia

来源：

RENEWABLE ENERGY | 2024年 / 231卷

关键词：

Oscillating water column; Numerical method; Waves; Nonlinear; Renewable energy; FREE-SURFACE; ENERGY; MODEL; CFD; OPTIMIZATION; VALIDATION; PARAMETERS; PRESSURE; TURBINES; BODIES;

D O I：

10.1016/j.renene.2024.120930

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A three-dimensional computational fluid dynamic (CFD) model is developed for simulating a cylindrical Oscillating Water Column (OWC) device for harvesting wave energy. The single-phase CFD model solves the Reynolds-Averaged Navier-Stokes (RANS) equations using the finite element method for simulating the wave motion and uses an aerodynamic model to simulate the flow through the air turbine. The model is implemented to simulate wave energy harvesting of a cylindrical OWC device. Through harmonic decomposition, it is found that the first harmonic wave surface elevation oscillates like a piston in the OWC chamber. However, both the amplitude and phase of the second harmonic wave surface elevation vary significantly along the wave direction in the OWC chamber, demonstrating a sloshing mode of the second harmonic. This study further proved the reduction of the capture width ratio caused by the transverse sloshing mode when the wavelength is the same as the wave flume width. The effect of the width of the wave flume on the peak CWR is found to be negligibly small when the wave flume width is three times the OWC diameter.

引用

页数：12

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