Constructal Design Applied to an Oscillating Water Column Wave Energy Converter Device under Realistic Sea State Conditions
In this work, we conducted a numerical analysis of an oscillating water column (OWC) wave energy converter (WEC) device. The main objective of this research was to conduct a geometric evaluation of the device by defining an optimal configuration that maximized its available hydrodynamic power while...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-11-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/11/11/2174 |
| _version_ | 1797458764337512448 |
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| author | Rafael Pereira Maciel Phelype Haron Oleinik Elizaldo Domingues Dos Santos Luiz Alberto Oliveira Rocha Bianca Neves Machado Mateus das Neves Gomes Liércio André Isoldi |
| author_facet | Rafael Pereira Maciel Phelype Haron Oleinik Elizaldo Domingues Dos Santos Luiz Alberto Oliveira Rocha Bianca Neves Machado Mateus das Neves Gomes Liércio André Isoldi |
| author_sort | Rafael Pereira Maciel |
| collection | DOAJ |
| description | In this work, we conducted a numerical analysis of an oscillating water column (OWC) wave energy converter (WEC) device. The main objective of this research was to conduct a geometric evaluation of the device by defining an optimal configuration that maximized its available hydrodynamic power while employing realistic sea data. To achieve this objective, the WaveMIMO methodology was used. This is characterized by the conversion of realistic sea data into time series of the free surface elevation. These time series were processed and transformed into water velocity components, enabling transient velocity data to be used as boundary conditions for the generation of numerical irregular waves in the Fluent 2019 R2 software. Regular waves representative of the sea data were also generated in order to evaluate the hydrodynamic performance of the device in comparison to the realistic irregular waves. For the geometric analysis, the constructal design method was utilized. The hydropneumatic chamber volume and the total volume of the device were adopted as geometric constraints and remained constant. Three degrees of freedom (DOF) were used for this study: <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>H</mi><mn>1</mn></msub><mo>/</mo><mi>L</mi></mrow></semantics></math></inline-formula> is the ratio between the height and length of the hydropneumatic chamber, whose values were varied, and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>H</mi><mn>2</mn></msub><mo>/</mo><mi>l</mi></mrow></semantics></math></inline-formula> (ratio between height and length of the turbine duct) and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>H</mi><mn>3</mn></msub></semantics></math></inline-formula> (submergence depth of hydropneumatic chamber) were kept constant. The best performance was observed for the device geometry with <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>H</mi><mn>1</mn></msub><mo>/</mo><mi>L</mi><mo>=</mo></mrow></semantics></math></inline-formula> 0.1985, which presented an available hydropneumatic power <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>P</mi><mrow><mi>h</mi><mi>y</mi><mi>d</mi></mrow></msub></semantics></math></inline-formula> of 29.63 W. This value was 4.34 times higher than the power generated by the worst geometry performance, which was 6.83 W, obtained with an <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>H</mi><mn>1</mn></msub><mo>/</mo><mi>L</mi></mrow></semantics></math></inline-formula> value of 2.2789, and 2.49 times higher than the power obtained by the device with the same dimensions as those from the one on Pico island, which was 11.89 W. When the optimal geometry was subjected to regular waves, a <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>P</mi><mrow><mi>h</mi><mi>y</mi><mi>d</mi></mrow></msub></semantics></math></inline-formula> of 30.50 W was encountered. |
| first_indexed | 2024-03-09T16:41:53Z |
| format | Article |
| id | doaj.art-3f0a64b06e3d4cf797656e125f2e37a7 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-09T16:41:53Z |
| publishDate | 2023-11-01 |
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| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-3f0a64b06e3d4cf797656e125f2e37a72023-11-24T14:50:44ZengMDPI AGJournal of Marine Science and Engineering2077-13122023-11-011111217410.3390/jmse11112174Constructal Design Applied to an Oscillating Water Column Wave Energy Converter Device under Realistic Sea State ConditionsRafael Pereira Maciel0Phelype Haron Oleinik1Elizaldo Domingues Dos Santos2Luiz Alberto Oliveira Rocha3Bianca Neves Machado4Mateus das Neves Gomes5Liércio André Isoldi6School of Engineering, Federal University of Rio Grande (FURG), Rio Grande 96203-900, RS, BrazilSchool of Engineering, Federal University of Rio Grande (FURG), Rio Grande 96203-900, RS, BrazilSchool of Engineering, Federal University of Rio Grande (FURG), Rio Grande 96203-900, RS, BrazilSchool of Engineering, Federal University of Rio Grande (FURG), Rio Grande 96203-900, RS, BrazilInterdisciplinary Department, Federal University of Rio Grande do Sul (UFRGS), Tramandaí 95590-000, RS, BrazilFederal Institute of Paraná (IFPR), Paranaguá 83215-750, PR, BrazilSchool of Engineering, Federal University of Rio Grande (FURG), Rio Grande 96203-900, RS, BrazilIn this work, we conducted a numerical analysis of an oscillating water column (OWC) wave energy converter (WEC) device. The main objective of this research was to conduct a geometric evaluation of the device by defining an optimal configuration that maximized its available hydrodynamic power while employing realistic sea data. To achieve this objective, the WaveMIMO methodology was used. This is characterized by the conversion of realistic sea data into time series of the free surface elevation. These time series were processed and transformed into water velocity components, enabling transient velocity data to be used as boundary conditions for the generation of numerical irregular waves in the Fluent 2019 R2 software. Regular waves representative of the sea data were also generated in order to evaluate the hydrodynamic performance of the device in comparison to the realistic irregular waves. For the geometric analysis, the constructal design method was utilized. The hydropneumatic chamber volume and the total volume of the device were adopted as geometric constraints and remained constant. Three degrees of freedom (DOF) were used for this study: <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>H</mi><mn>1</mn></msub><mo>/</mo><mi>L</mi></mrow></semantics></math></inline-formula> is the ratio between the height and length of the hydropneumatic chamber, whose values were varied, and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>H</mi><mn>2</mn></msub><mo>/</mo><mi>l</mi></mrow></semantics></math></inline-formula> (ratio between height and length of the turbine duct) and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>H</mi><mn>3</mn></msub></semantics></math></inline-formula> (submergence depth of hydropneumatic chamber) were kept constant. The best performance was observed for the device geometry with <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>H</mi><mn>1</mn></msub><mo>/</mo><mi>L</mi><mo>=</mo></mrow></semantics></math></inline-formula> 0.1985, which presented an available hydropneumatic power <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>P</mi><mrow><mi>h</mi><mi>y</mi><mi>d</mi></mrow></msub></semantics></math></inline-formula> of 29.63 W. This value was 4.34 times higher than the power generated by the worst geometry performance, which was 6.83 W, obtained with an <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>H</mi><mn>1</mn></msub><mo>/</mo><mi>L</mi></mrow></semantics></math></inline-formula> value of 2.2789, and 2.49 times higher than the power obtained by the device with the same dimensions as those from the one on Pico island, which was 11.89 W. When the optimal geometry was subjected to regular waves, a <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>P</mi><mrow><mi>h</mi><mi>y</mi><mi>d</mi></mrow></msub></semantics></math></inline-formula> of 30.50 W was encountered.https://www.mdpi.com/2077-1312/11/11/2174irregular wavesOWC deviceWaveMIMO methodology |
| spellingShingle | Rafael Pereira Maciel Phelype Haron Oleinik Elizaldo Domingues Dos Santos Luiz Alberto Oliveira Rocha Bianca Neves Machado Mateus das Neves Gomes Liércio André Isoldi Constructal Design Applied to an Oscillating Water Column Wave Energy Converter Device under Realistic Sea State Conditions Journal of Marine Science and Engineering irregular waves OWC device WaveMIMO methodology |
| title | Constructal Design Applied to an Oscillating Water Column Wave Energy Converter Device under Realistic Sea State Conditions |
| title_full | Constructal Design Applied to an Oscillating Water Column Wave Energy Converter Device under Realistic Sea State Conditions |
| title_fullStr | Constructal Design Applied to an Oscillating Water Column Wave Energy Converter Device under Realistic Sea State Conditions |
| title_full_unstemmed | Constructal Design Applied to an Oscillating Water Column Wave Energy Converter Device under Realistic Sea State Conditions |
| title_short | Constructal Design Applied to an Oscillating Water Column Wave Energy Converter Device under Realistic Sea State Conditions |
| title_sort | constructal design applied to an oscillating water column wave energy converter device under realistic sea state conditions |
| topic | irregular waves OWC device WaveMIMO methodology |
| url | https://www.mdpi.com/2077-1312/11/11/2174 |
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