Numerical analysis of blockage correction methods for tidal turbines
The current work presents the analysis of six different blockage correction methods for axial-flow turbines from the literature and compares them to a method proposed by the authors using blade-resolved CFD simulations. The analysis of the different methods is performed by comparing the corrected bl...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
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Springer
2020
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| _version_ | 1797081152621641728 |
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| author | Zilic de Arcos, F Tampier, G Vogel, CR |
| author_facet | Zilic de Arcos, F Tampier, G Vogel, CR |
| author_sort | Zilic de Arcos, F |
| collection | OXFORD |
| description | The current work presents the analysis of six different blockage correction methods for axial-flow turbines from the literature and compares them to a method proposed by the authors using blade-resolved CFD simulations. The analysis of the different methods is performed by comparing the corrected blocked-flow thrust and power results of a tidal turbine to a quasi free-flow condition, obtaining a quantitative measure of the error for every method at different blockages and tip-speed ratios. This study shows that not every available method for blockage correction remains valid for the range of turbine thrusts that may occur in blocked flows. Of the seven methods analysed, only three were found to provide a reliable estimate of the power and thrust across the range of blockage and tip-speed ratios analysed in this paper, including the one proposed by the authors. Of the remaining correction methods, those that could be used as a first approximation for low-blockage conditions are identified. |
| first_indexed | 2024-03-07T01:10:29Z |
| format | Journal article |
| id | oxford-uuid:8cd5d209-b3c6-4f78-981d-07b181bcdb55 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:10:29Z |
| publishDate | 2020 |
| publisher | Springer |
| record_format | dspace |
| spelling | oxford-uuid:8cd5d209-b3c6-4f78-981d-07b181bcdb552022-03-26T22:47:09ZNumerical analysis of blockage correction methods for tidal turbinesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:8cd5d209-b3c6-4f78-981d-07b181bcdb55EnglishSymplectic ElementsSpringer2020Zilic de Arcos, FTampier, GVogel, CRThe current work presents the analysis of six different blockage correction methods for axial-flow turbines from the literature and compares them to a method proposed by the authors using blade-resolved CFD simulations. The analysis of the different methods is performed by comparing the corrected blocked-flow thrust and power results of a tidal turbine to a quasi free-flow condition, obtaining a quantitative measure of the error for every method at different blockages and tip-speed ratios. This study shows that not every available method for blockage correction remains valid for the range of turbine thrusts that may occur in blocked flows. Of the seven methods analysed, only three were found to provide a reliable estimate of the power and thrust across the range of blockage and tip-speed ratios analysed in this paper, including the one proposed by the authors. Of the remaining correction methods, those that could be used as a first approximation for low-blockage conditions are identified. |
| spellingShingle | Zilic de Arcos, F Tampier, G Vogel, CR Numerical analysis of blockage correction methods for tidal turbines |
| title | Numerical analysis of blockage correction methods for tidal turbines |
| title_full | Numerical analysis of blockage correction methods for tidal turbines |
| title_fullStr | Numerical analysis of blockage correction methods for tidal turbines |
| title_full_unstemmed | Numerical analysis of blockage correction methods for tidal turbines |
| title_short | Numerical analysis of blockage correction methods for tidal turbines |
| title_sort | numerical analysis of blockage correction methods for tidal turbines |
| work_keys_str_mv | AT zilicdearcosf numericalanalysisofblockagecorrectionmethodsfortidalturbines AT tampierg numericalanalysisofblockagecorrectionmethodsfortidalturbines AT vogelcr numericalanalysisofblockagecorrectionmethodsfortidalturbines |