Numerical and Experimental Study of the Solo Duck Wave Energy Converter
The Edinburgh Duck is one of the highly-efficient wave energy converters (WECs). Compared to the spine-connected Duck configuration, the solo Duck will be able to use the point absorber effect to enhance its power capture performance. In this paper, a 3D computational fluid dynamic (CFD) model is de...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-05-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/12/10/1941 |
| _version_ | 1811301995053580288 |
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| author | Jinming Wu Yingxue Yao Dongke Sun Zhonghua Ni Malin Göteman |
| author_facet | Jinming Wu Yingxue Yao Dongke Sun Zhonghua Ni Malin Göteman |
| author_sort | Jinming Wu |
| collection | DOAJ |
| description | The Edinburgh Duck is one of the highly-efficient wave energy converters (WECs). Compared to the spine-connected Duck configuration, the solo Duck will be able to use the point absorber effect to enhance its power capture performance. In this paper, a 3D computational fluid dynamic (CFD) model is developed to predict the hydrodynamic performance of the solo Duck WEC in regular waveswithin a wide range ofwave steepness until the Duck capsizes. A set of experiments was designed to validate the accuracy of the CFD model. Boundary element method (BEM) simulations are also performed for comparison. CFD results agree well with experimental results and the main difference comes from the friction in the mechanical transmission system. CFD results also agree well with BEM results and differences appear at large wave steepness as a result of two hydrodynamic nonlinear factors: the nonlinear waveform and the vortex generation process. The influence of both two nonlinear factors iscombined to be quantitatively represented by the drag torque coefficient.The vortex generation process is found to cause a rapid drop of the pressure force due to the vortexes taking away the kinetic energy from the fluid. |
| first_indexed | 2024-04-13T07:20:03Z |
| format | Article |
| id | doaj.art-2df1569b04314343a3e677bf654af212 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-13T07:20:03Z |
| publishDate | 2019-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-2df1569b04314343a3e677bf654af2122022-12-22T02:56:38ZengMDPI AGEnergies1996-10732019-05-011210194110.3390/en12101941en12101941Numerical and Experimental Study of the Solo Duck Wave Energy ConverterJinming Wu0Yingxue Yao1Dongke Sun2Zhonghua Ni3Malin Göteman4School of Mechanical Engineering, Southeast University, Nanjing 211189, Jiangsu, ChinaShenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, Guangdong, ChinaSchool of Mechanical Engineering, Southeast University, Nanjing 211189, Jiangsu, ChinaSchool of Mechanical Engineering, Southeast University, Nanjing 211189, Jiangsu, ChinaDepartment of Engineering Science, Uppsala University, 75121 Uppsala, SwedenThe Edinburgh Duck is one of the highly-efficient wave energy converters (WECs). Compared to the spine-connected Duck configuration, the solo Duck will be able to use the point absorber effect to enhance its power capture performance. In this paper, a 3D computational fluid dynamic (CFD) model is developed to predict the hydrodynamic performance of the solo Duck WEC in regular waveswithin a wide range ofwave steepness until the Duck capsizes. A set of experiments was designed to validate the accuracy of the CFD model. Boundary element method (BEM) simulations are also performed for comparison. CFD results agree well with experimental results and the main difference comes from the friction in the mechanical transmission system. CFD results also agree well with BEM results and differences appear at large wave steepness as a result of two hydrodynamic nonlinear factors: the nonlinear waveform and the vortex generation process. The influence of both two nonlinear factors iscombined to be quantitatively represented by the drag torque coefficient.The vortex generation process is found to cause a rapid drop of the pressure force due to the vortexes taking away the kinetic energy from the fluid.https://www.mdpi.com/1996-1073/12/10/1941solo Duckcomputational fluid dynamicwave steepnessexperimenthydrodynamic nonlinearity |
| spellingShingle | Jinming Wu Yingxue Yao Dongke Sun Zhonghua Ni Malin Göteman Numerical and Experimental Study of the Solo Duck Wave Energy Converter Energies solo Duck computational fluid dynamic wave steepness experiment hydrodynamic nonlinearity |
| title | Numerical and Experimental Study of the Solo Duck Wave Energy Converter |
| title_full | Numerical and Experimental Study of the Solo Duck Wave Energy Converter |
| title_fullStr | Numerical and Experimental Study of the Solo Duck Wave Energy Converter |
| title_full_unstemmed | Numerical and Experimental Study of the Solo Duck Wave Energy Converter |
| title_short | Numerical and Experimental Study of the Solo Duck Wave Energy Converter |
| title_sort | numerical and experimental study of the solo duck wave energy converter |
| topic | solo Duck computational fluid dynamic wave steepness experiment hydrodynamic nonlinearity |
| url | https://www.mdpi.com/1996-1073/12/10/1941 |
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