Abstract
In this paper, the effects of double-submerged breakwaters and trenches on the hydrodynamic performance of an oscillating water column (OWC) are investigated. The multi-domain boundary element method is used to tackle the physical problem of wave scattering and radiation from the device. The role of the height of the breakwaters, depth of the trenches, width of the breakwaters and trenches, spacing between the structures, length of the OWC chamber, and other wave and structural parameters is investigated on the efficiency of OWC. The study reveals that there is an oscillating pattern of the efficiency curve in the presence of single or double breakwater/trenches; this pattern is absent when the bottom is flat. Moreover, compared to single or no breakwaters/trenches, the occurrence of full OWC efficiency is higher in the presence of double breakwaters/trenches. Furthermore, the amplitude of the oscillating pattern in the efficiency curve increases with an increase in the height and depth of the breakwaters and trenches, respectively. For some particular wave and structural parameters, zero OWC efficiency occurs nearly ??0h=3.4 within 0
DOI
10.1063/5.0146004
Publication Date
2023-04-12
Publication Title
Physics of Fluids
Volume
35
Issue
4
Publisher
AIP Publishing
ISSN
1089-7666
Embargo Period
2024-11-22
First Page
47115
Last Page
47115
Recommended Citation
Naik, N., Zheng, S., & Behera, H. (2023) 'Role of dual breakwaters and trenches on efficiency of an oscillating water column', Physics of Fluids, 35(4), pp. 47115-47115. AIP Publishing: Available at: https://doi.org/10.1063/5.0146004
