The influence of parameters on the hydrodynamic characteristics of OWC (oscillating water column) devices exhibits a coupling phenomenon, which is frequently neglected. To elucidate the comprehensive influence and its mechanism of structure parameters on the hydrodynamic characteristics of offshore OWC devices, a structure with a bottom plate was selected in this study. Through numerical simulation, the hydrodynamic characteristics of the chamber with variations in PTO (power take off) coefficient α, chamber length Bs, internal depth Jn, and under water length of front wall Je with different wave conditions are investigated. The following conclusions are primarily drawn: The research method of using the relative wavelength L/Bs as a non-dimensional parameter and solely varying the wavelength L has its drawbacks. In cases that L/Bs is held constant, the efficiency of chambers differing only in Bs can vary by more than 70%. The influence of each parameter on the effectiveness is interrelated. Chambers with a lower α exhibit a more pronounced impact of Bs. The efficiency of device with a smaller relative wavelength L/Bs is more significantly affected by the Jn. The mechanism by which the parameters affect efficiency is primarily since chambers with shorter Bs or greater Jn exhibit smaller deformations during internal liquid surface oscillation, resembling a more uniform oscillating water column. This allows more energy to be utilized for pushing air in and out of the chamber above, thereby enhancing the energy conversion capability. The results of this research can provide valuable insights for the design of OWC devices.
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January 2025
Research Article|
January 13 2025
The influence of parameters on the hydrodynamic characteristics of oscillating water column devices: A numerical study
Ming Qu (曲铭)
;
Ming Qu (曲铭)
(Conceptualization, Data curation, Formal analysis, Investigation, Software, Validation, Writing – original draft)
1
College of Mechanical and Electronic Engineering, China University of Petroleum (East China)
, Qingdao 266580, China
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Xingxian Bao (包兴先)
;
Xingxian Bao (包兴先)
a)
(Methodology, Supervision, Writing – review & editing)
1
College of Mechanical and Electronic Engineering, China University of Petroleum (East China)
, Qingdao 266580, China
a)Author to whom correspondence should be addressed: [email protected]
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Jian Bao (鲍健);
Jian Bao (鲍健)
(Conceptualization, Writing – review & editing)
2
College of Engineering, Ocean University of China
, Qingdao 266100, China
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Maojie Wang (王茂洁)
Maojie Wang (王茂洁)
(Conceptualization, Writing – review & editing)
1
College of Mechanical and Electronic Engineering, China University of Petroleum (East China)
, Qingdao 266580, China
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a)Author to whom correspondence should be addressed: [email protected]
Physics of Fluids 37, 017134 (2025)
Article history
Received:
September 26 2024
Accepted:
December 26 2024
Citation
Ming Qu, Xingxian Bao, Jian Bao, Maojie Wang; The influence of parameters on the hydrodynamic characteristics of oscillating water column devices: A numerical study. Physics of Fluids 1 January 2025; 37 (1): 017134. https://doi.org/10.1063/5.0240832
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