Multi-row extension to laterally confined actuator disk model using a hybrid inviscid-viscous approach
<p>The effects of blockage and wake mixing are fundamental but still unresolved problems in the aero/hydrodynamics of wind/tidal-stream turbine arrays. This paper aims to extend the linear momentum actuator disc theory (LMADT) to incorporate a large number of aligned or staggered turbine rows...
| Main Authors: | , |
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| Format: | Conference item |
| Language: | English |
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European Academy of Wind Energy
2020
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| _version_ | 1826289311396397056 |
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| author | Juniper, MCR Nishino, T |
| author_facet | Juniper, MCR Nishino, T |
| author_sort | Juniper, MCR |
| collection | OXFORD |
| description | <p>The effects of blockage and wake mixing are fundamental but still unresolved problems in the aero/hydrodynamics of wind/tidal-stream turbine arrays. This paper aims to extend the linear momentum actuator disc theory (LMADT) to incorporate a large number of aligned or staggered turbine rows with inter-turbine wake mixing. The extension is performed by utilising alternating inviscid and viscous zones to calculate the flow around a turbine and to calculate mixing in the wake, respectively. Using the extended model this study explores the power extraction of a multi-row turbine array for a varying resistance coefficient. This exploration is performed for both aligned and staggered turbine arrangements for a range of blockage ratios and wake mixing rates. Results highlight the importance of the combined effects of blockage and wake mixing, particularly for staggered turbine arrays. The impact of the number of turbine rows and inter-turbine mixing rates on the maximum array performance is also investigated.</p> |
| first_indexed | 2024-03-07T02:26:57Z |
| format | Conference item |
| id | oxford-uuid:a5ec5c9c-f78e-4911-ab6f-c5a72a90b196 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:26:57Z |
| publishDate | 2020 |
| publisher | European Academy of Wind Energy |
| record_format | dspace |
| spelling | oxford-uuid:a5ec5c9c-f78e-4911-ab6f-c5a72a90b1962022-03-27T02:43:49ZMulti-row extension to laterally confined actuator disk model using a hybrid inviscid-viscous approachConference itemhttp://purl.org/coar/resource_type/c_5794uuid:a5ec5c9c-f78e-4911-ab6f-c5a72a90b196EnglishSymplectic ElementsEuropean Academy of Wind Energy2020Juniper, MCRNishino, T<p>The effects of blockage and wake mixing are fundamental but still unresolved problems in the aero/hydrodynamics of wind/tidal-stream turbine arrays. This paper aims to extend the linear momentum actuator disc theory (LMADT) to incorporate a large number of aligned or staggered turbine rows with inter-turbine wake mixing. The extension is performed by utilising alternating inviscid and viscous zones to calculate the flow around a turbine and to calculate mixing in the wake, respectively. Using the extended model this study explores the power extraction of a multi-row turbine array for a varying resistance coefficient. This exploration is performed for both aligned and staggered turbine arrangements for a range of blockage ratios and wake mixing rates. Results highlight the importance of the combined effects of blockage and wake mixing, particularly for staggered turbine arrays. The impact of the number of turbine rows and inter-turbine mixing rates on the maximum array performance is also investigated.</p> |
| spellingShingle | Juniper, MCR Nishino, T Multi-row extension to laterally confined actuator disk model using a hybrid inviscid-viscous approach |
| title | Multi-row extension to laterally confined actuator disk model using a hybrid inviscid-viscous approach |
| title_full | Multi-row extension to laterally confined actuator disk model using a hybrid inviscid-viscous approach |
| title_fullStr | Multi-row extension to laterally confined actuator disk model using a hybrid inviscid-viscous approach |
| title_full_unstemmed | Multi-row extension to laterally confined actuator disk model using a hybrid inviscid-viscous approach |
| title_short | Multi-row extension to laterally confined actuator disk model using a hybrid inviscid-viscous approach |
| title_sort | multi row extension to laterally confined actuator disk model using a hybrid inviscid viscous approach |
| work_keys_str_mv | AT junipermcr multirowextensiontolaterallyconfinedactuatordiskmodelusingahybridinviscidviscousapproach AT nishinot multirowextensiontolaterallyconfinedactuatordiskmodelusingahybridinviscidviscousapproach |