Performance of a distensible-tube wave attenuator in a slender focusing channel
Performance of a distensible-tube wave attenuator in a slender focusing channel
复制标题
细长聚焦通道中可伸缩管波衰减器的性能
DOI:
10.1007/s40722-023-00297-8
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发表时间:
2023
影响因子:
1.9
通讯作者:
Mendes A
中科院分区:
文献类型:
--
作者:
Mendes A
A wave energy device utilizing a water-filled distensible tube aligned head to waves is analyzed. The wave-excited pressure bulges in the tube activate a stationary forward-bent circular oscillating water column (OWC) at its stern. This system has been extensively tested in wave-tank, at different scales. However, further improvements to its efficiency are possible. The present research assesses its performance at 1:20 scale, while operating in a slender focusing channel. Complementarily, two other situations are considered: one at the nearshore, where the system is assembled to a bottom-standing jacket structure, and an onshore design where the tube operates in front of a sea wall in constant depth or over a sloping bottom. Deep and intermediate regular waves of small and finite amplitudes are generated in the wave-tank, representing the wave climate in the Occidental Group of the Azores islands. A non-linear power take-off impedance is imposed by a set of calibrated orifice plates and its characteristic is then obtained assuming compressible airflow. Measurements of air pressure in the pneumatic chamber, OWC free-surface displacement, and incident wave-field provide estimates of energy capture-width, which are then compared with analytical predictions and benchmark test results. Photographs further help to understand the physics underlying the tube’s working modes. Moreover, the performance of the system is obtained with and without the tube and then compared with standard values for OWCs. It is demonstrated that the addition of a distensible tube and a suitable focusing channel can significantly improve the capacity factor of a conventional OWC system.
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DOI:
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发表时间:
2007
期刊:
影响因子:
--
作者:
A. C. Mendes;W. Monteiro
通讯作者:
W. Monteiro
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
A. C. Mendes;L. Paredes;F. A. S. Gil;J. Chaplin
通讯作者:
J. Chaplin
DOI:
--
发表时间:
1986
期刊:
影响因子:
--
作者:
O. Malmo;A. Reitan
通讯作者:
A. Reitan
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
J. Chaplin;F. Farley;Maritime Energy
通讯作者:
Maritime Energy
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
A. C. Mendes;F. P. Braga;L. Paredes;J. Chaplin
通讯作者:
J. Chaplin