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A Numerical Study on Hydrodynamic Energy Conversions of OWC-WEC with the Linear Decomposition Method under Irregular Waves
- Source :
- Energies; Volume 14; Issue 6; Pages: 1522, Energies, Vol 14, Iss 1522, p 1522 (2021)
- Publication Year :
- 2021
- Publisher :
- Multidisciplinary Digital Publishing Institute, 2021.
-
Abstract
- A numerical study was performed to investigate the applicability of the linear decomposition method for the hydrodynamic energy conversion of an oscillating-water-column type wave energy converter (OWC-WEC). Hydrodynamic problems of the OWC chamber were decomposed into the excitation and radiation problems with the time-domain numerical method based on the linear potential theory. A finite element method was applied to solve the potential flow in the entire fluid domain including OWC chamber structure. The validity of the linear decomposition method was examined by comparing with the direct interaction method for the turbine–chamber interaction based on the linear pressure drop characteristics. In order to estimate the hydrodynamic energy conversion performance under the irregular waves, the response spectrum method was applied with the transfer function based on the linear decomposition method. Under the various irregular wave conditions, the pneumatic power of OWC-WEC calculated by the response spectrum based on the linear decomposition method agreed well with the direct irregular wave simulation results.
- Subjects :
- Control and Optimization
020209 energy
Oscillating Water Column
Energy Engineering and Power Technology
02 engineering and technology
lcsh:Technology
01 natural sciences
Transfer function
turbine–chamber interaction
0202 electrical engineering, electronic engineering, information engineering
oscillating water column
Energy transformation
Electrical and Electronic Engineering
wave energy converter
Response spectrum
Engineering (miscellaneous)
hydrodynamic
0105 earth and related environmental sciences
Physics
lcsh:T
010505 oceanography
Renewable Energy, Sustainability and the Environment
Numerical analysis
NWT
Mechanics
Finite element method
potential flow
linear decomposition method
Decomposition method (queueing theory)
Potential flow
Energy (miscellaneous)
Subjects
Details
- Language :
- English
- ISSN :
- 19961073
- Database :
- OpenAIRE
- Journal :
- Energies; Volume 14; Issue 6; Pages: 1522
- Accession number :
- edsair.doi.dedup.....f4df38b082e6e6fd8fdaf55e7d1d31ba
- Full Text :
- https://doi.org/10.3390/en14061522