Experimental testing of the transverse horizontal axis water turbine
This study outlines the procedures and results for a set of experiments on the transverse horizontal axis water turbine (THAWT), which is a variant of a Darrieus turbine. Testing of a 1/20th scale device was conducted in the combined wind, wave and current tank at Newcastle University. Flow depth an...
| Main Authors: | , , , |
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| Format: | Journal article |
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2010
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| _version_ | 1797088822806183936 |
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| author | McAdam, R Houlsby, G Oldfield, M McCulloch, M |
| author_facet | McAdam, R Houlsby, G Oldfield, M McCulloch, M |
| author_sort | McAdam, R |
| collection | OXFORD |
| description | This study outlines the procedures and results for a set of experiments on the transverse horizontal axis water turbine (THAWT), which is a variant of a Darrieus turbine. Testing of a 1/20th scale device was conducted in the combined wind, wave and current tank at Newcastle University. Flow depth and velocity were varied over a range of realistic Froude numbers for tidal streams. Various configurations of the device were tested to assess the merits of the THAWT design. Variants included a parallel-bladed device, a 'truss' device and a parallel-bladed device configured with blades pitched relative to the pitch circle tangent. Experiments were carried out using a speed controlled motor, allowing quasi-steady results to be taken over a range of tip speed ratios. The results demonstrate that, over a range of flow conditions, the device is capable of exceeding the Lanchester-Betz limit for kinetic efficiency. This is principally because of the relatively high blockage ratio that can be achieved with such a device. © 2010 © The Institution of Engineering and Technology. |
| first_indexed | 2024-03-07T02:55:36Z |
| format | Journal article |
| id | oxford-uuid:af2ad62e-700d-4c3f-b42c-def478386973 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T02:55:36Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | oxford-uuid:af2ad62e-700d-4c3f-b42c-def4783869732022-03-27T03:47:45ZExperimental testing of the transverse horizontal axis water turbineJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:af2ad62e-700d-4c3f-b42c-def478386973Symplectic Elements at Oxford2010McAdam, RHoulsby, GOldfield, MMcCulloch, MThis study outlines the procedures and results for a set of experiments on the transverse horizontal axis water turbine (THAWT), which is a variant of a Darrieus turbine. Testing of a 1/20th scale device was conducted in the combined wind, wave and current tank at Newcastle University. Flow depth and velocity were varied over a range of realistic Froude numbers for tidal streams. Various configurations of the device were tested to assess the merits of the THAWT design. Variants included a parallel-bladed device, a 'truss' device and a parallel-bladed device configured with blades pitched relative to the pitch circle tangent. Experiments were carried out using a speed controlled motor, allowing quasi-steady results to be taken over a range of tip speed ratios. The results demonstrate that, over a range of flow conditions, the device is capable of exceeding the Lanchester-Betz limit for kinetic efficiency. This is principally because of the relatively high blockage ratio that can be achieved with such a device. © 2010 © The Institution of Engineering and Technology. |
| spellingShingle | McAdam, R Houlsby, G Oldfield, M McCulloch, M Experimental testing of the transverse horizontal axis water turbine |
| title | Experimental testing of the transverse horizontal axis water turbine |
| title_full | Experimental testing of the transverse horizontal axis water turbine |
| title_fullStr | Experimental testing of the transverse horizontal axis water turbine |
| title_full_unstemmed | Experimental testing of the transverse horizontal axis water turbine |
| title_short | Experimental testing of the transverse horizontal axis water turbine |
| title_sort | experimental testing of the transverse horizontal axis water turbine |
| work_keys_str_mv | AT mcadamr experimentaltestingofthetransversehorizontalaxiswaterturbine AT houlsbyg experimentaltestingofthetransversehorizontalaxiswaterturbine AT oldfieldm experimentaltestingofthetransversehorizontalaxiswaterturbine AT mccullochm experimentaltestingofthetransversehorizontalaxiswaterturbine |