Output of a tidal farm in yawed flow and varying turbulence using GAD-CFD

Badoe, Charles; Li, Xiaorong; Williams, Alison; Masters, Ian

doi:10.1016/j.oceaneng.2024.116736

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Output of a tidal farm in yawed flow and varying turbulence using GAD-CFD

Charles Badoe, Xiaorong Li, Alison Williams

, Ian Masters

Ocean Engineering, Volume: 294, Start page: 116736

Swansea University Authors: Charles Badoe, Xiaorong Li, Alison Williams , Ian Masters

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DOI (Published version): 10.1016/j.oceaneng.2024.116736

Abstract

Tidal stream turbine arrays will be subject to a range of flow conditions throughout the tidal cycle and it is important for developers to have an understanding of the impact of these on array performance when planning site design. A generalised actuator disk-computational fluid dynamics (GAD-CFD) m...

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Published in:	Ocean Engineering
ISSN:	0029-8018
Published:	Elsevier BV 2024
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa65560

first_indexed	2024-02-22T10:42:30Z
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A generalised actuator disk-computational fluid dynamics (GAD-CFD) model is used to conduct simulations on a three and fourteen turbine array arranged in two different configurations. Firstly, simulations of both arrays are conducted in straight flow conditions to understand the hydrodynamics around devices and evaluate their performance. Performance predictions for the three turbine array in straight flow conditions are in close agreement with previous studies. In the fourteen turbine array, wake recovery to free-stream conditions was better in the modified formation compared to the regular formation and the total power output was increased by over 10%. The influence of yaw angle and upstream TI (turbulence intensity) on both array performance was also studied. Strong sensitivity of overall farm power and thrust was found to exist in small variations in yaw angle. However, the overall wake structures were similar irrespective of the yaw angle. 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spelling	2024-06-19T10:20:33.8634878 v2 65560 2024-02-02 Output of a tidal farm in yawed flow and varying turbulence using GAD-CFD 5486694a1d89ddf9a3f99db36acf99e1 Charles Badoe Charles Badoe true false 583f9bf2d663c1feb79b086d807a3bec Xiaorong Li Xiaorong Li true false cb1b1946eccac3bbf7592d6ab1c4d065 0000-0002-2494-1468 Alison Williams Alison Williams true false 6fa19551092853928cde0e6d5fac48a1 0000-0001-7667-6670 Ian Masters Ian Masters true false 2024-02-02 ACEM Tidal stream turbine arrays will be subject to a range of flow conditions throughout the tidal cycle and it is important for developers to have an understanding of the impact of these on array performance when planning site design. A generalised actuator disk-computational fluid dynamics (GAD-CFD) model is used to conduct simulations on a three and fourteen turbine array arranged in two different configurations. Firstly, simulations of both arrays are conducted in straight flow conditions to understand the hydrodynamics around devices and evaluate their performance. Performance predictions for the three turbine array in straight flow conditions are in close agreement with previous studies. In the fourteen turbine array, wake recovery to free-stream conditions was better in the modified formation compared to the regular formation and the total power output was increased by over 10%. The influence of yaw angle and upstream TI (turbulence intensity) on both array performance was also studied. Strong sensitivity of overall farm power and thrust was found to exist in small variations in yaw angle. However, the overall wake structures were similar irrespective of the yaw angle. Finally, simulations of different turbulence intensities showed rapid decay shortly downstream of the inlet. In all arrays, turbulence intensity had little effect on the thrust and power of the upstream set of devices for the considered TI range but greatly influenced the individual downstream devices. Journal Article Ocean Engineering 294 116736 Elsevier BV 0029-8018 FloWave; GAD-CFD; Blade element momentum; Tidal energy; Tidal turbine; Horizontal axis turbine 15 2 2024 2024-02-15 10.1016/j.oceaneng.2024.116736 COLLEGE NANME Aerospace, Civil, Electrical, and Mechanical Engineering COLLEGE CODE ACEM Swansea University SU Library paid the OA fee (TA Institutional Deal) ERDF Ireland Wales Cooperation programme, Selkie81874. Selkie81874 2024-06-19T10:20:33.8634878 2024-02-02T09:09:24.1937655 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering Charles Badoe 1 Xiaorong Li 2 Alison Williams 0000-0002-2494-1468 3 Ian Masters 0000-0001-7667-6670 4 65560__29936__e4866aaea5774e1eabdc0e9a087db1d8.pdf 65560.VOR.pdf 2024-04-07T13:28:29.5952997 Output 5124488 application/pdf Version of Record true © 2024 The Authors. This is an open access article under the CC BY license. true eng http://creativecommons.org/licenses/by/4.0/
title	Output of a tidal farm in yawed flow and varying turbulence using GAD-CFD
spellingShingle	Output of a tidal farm in yawed flow and varying turbulence using GAD-CFD Charles Badoe Xiaorong Li Alison Williams Ian Masters
title_short	Output of a tidal farm in yawed flow and varying turbulence using GAD-CFD
title_full	Output of a tidal farm in yawed flow and varying turbulence using GAD-CFD
title_fullStr	Output of a tidal farm in yawed flow and varying turbulence using GAD-CFD
title_full_unstemmed	Output of a tidal farm in yawed flow and varying turbulence using GAD-CFD
title_sort	Output of a tidal farm in yawed flow and varying turbulence using GAD-CFD
author_id_str_mv	5486694a1d89ddf9a3f99db36acf99e1 583f9bf2d663c1feb79b086d807a3bec cb1b1946eccac3bbf7592d6ab1c4d065 6fa19551092853928cde0e6d5fac48a1
author_id_fullname_str_mv	5486694a1d89ddf9a3f99db36acf99e1_*_Charles Badoe 583f9bf2d663c1feb79b086d807a3bec__Xiaorong Li cb1b1946eccac3bbf7592d6ab1c4d065__Alison Williams 6fa19551092853928cde0e6d5fac48a1_*_Ian Masters
author	Charles Badoe Xiaorong Li Alison Williams Ian Masters
author2	Charles Badoe Xiaorong Li Alison Williams Ian Masters
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container_title	Ocean Engineering
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description	Tidal stream turbine arrays will be subject to a range of flow conditions throughout the tidal cycle and it is important for developers to have an understanding of the impact of these on array performance when planning site design. A generalised actuator disk-computational fluid dynamics (GAD-CFD) model is used to conduct simulations on a three and fourteen turbine array arranged in two different configurations. Firstly, simulations of both arrays are conducted in straight flow conditions to understand the hydrodynamics around devices and evaluate their performance. Performance predictions for the three turbine array in straight flow conditions are in close agreement with previous studies. In the fourteen turbine array, wake recovery to free-stream conditions was better in the modified formation compared to the regular formation and the total power output was increased by over 10%. The influence of yaw angle and upstream TI (turbulence intensity) on both array performance was also studied. Strong sensitivity of overall farm power and thrust was found to exist in small variations in yaw angle. However, the overall wake structures were similar irrespective of the yaw angle. Finally, simulations of different turbulence intensities showed rapid decay shortly downstream of the inlet. In all arrays, turbulence intensity had little effect on the thrust and power of the upstream set of devices for the considered TI range but greatly influenced the individual downstream devices.
published_date	2024-02-15T05:19:00Z
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Output of a tidal farm in yawed flow and varying turbulence using GAD-CFD

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