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Turbine design dependency to turbulence: An experimental study of three scaled tidal turbines

Myriam Slama, Grégory Pinon, Charifa El Hadi, Michael Togneri Orcid Logo, Benoît Gaurier, Grégory Germain, Jean-Valéry Facq, José Nuño, Pablo Mansilla, Erwann Nicolas, Julie Marcille, André Pacheco

Ocean Engineering, Volume: 234, Start page: 109035

Swansea University Author: Michael Togneri Orcid Logo

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DOI (Published version): 10.1016/j.oceaneng.2021.109035

Abstract

In this paper the turbulence effects are studied for three rotors mounted on the same instrumented hub. Two scaled models of industrial turbines and one open-geometry turbine are considered. The turbulence characteristics are obtained from 2D Laser Doppler Velocimeter measurements and the turbine be...

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Published in: Ocean Engineering
ISSN: 0029-8018
Published: Elsevier BV 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa57038
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spelling 2021-12-02T11:26:02.6493288 v2 57038 2021-06-07 Turbine design dependency to turbulence: An experimental study of three scaled tidal turbines 7032d5a521c181cea18dbb759e1ffdeb 0000-0002-6820-1680 Michael Togneri Michael Togneri true false 2021-06-07 MECH In this paper the turbulence effects are studied for three rotors mounted on the same instrumented hub. Two scaled models of industrial turbines and one open-geometry turbine are considered. The turbulence characteristics are obtained from 2D Laser Doppler Velocimeter measurements and the turbine behaviour is analysed from thrust and torque measurements. Three turbulence intensities and a large range of tip speed ratios and flow velocities are considered. The results are anonymised in order to ensure confidentiality. The rotors have different blade profiles, blade numbers and solidity. The rotor design largely modifies the mean power and thrust coefficients. The turbulence intensity only slightly changes these results but has a larger influence on the fluctuating loads than the different rotor designs. The spectral analysis of the rotor torque and thrust shows that, at low frequencies the load variations are correlated to those of the flow velocity with some differences due to the turbulence intensity levels. The coherences between the loads and the velocity seem to be not affected by the rotor type. At high frequencies, the load variations are correlated to the speed control unit of the scaled model and the rotor design has an impact on the rotational speed and loads coherences. Journal Article Ocean Engineering 234 109035 Elsevier BV 0029-8018 Marine current turbine, Performance, Turbulence, Tank testing, Coherence, Spectral analysis 1 8 2021 2021-08-01 10.1016/j.oceaneng.2021.109035 http://dx.doi.org/10.1016/j.oceaneng.2021.109035 COLLEGE NANME Mechanical Engineering COLLEGE CODE MECH Swansea University 2021-12-02T11:26:02.6493288 2021-06-07T09:44:42.1827726 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering Myriam Slama 1 Grégory Pinon 2 Charifa El Hadi 3 Michael Togneri 0000-0002-6820-1680 4 Benoît Gaurier 5 Grégory Germain 6 Jean-Valéry Facq 7 José Nuño 8 Pablo Mansilla 9 Erwann Nicolas 10 Julie Marcille 11 André Pacheco 12 57038__20432__3f70b45ed5aa4046a08b20dfa5e5b418.pdf 57038.pdf 2021-07-20T11:36:09.8150622 Output 15166317 application/pdf Accepted Manuscript true 2022-06-04T00:00:00.0000000 http://creativecommons.org/licenses/by-nc-nd/4.0/ true eng http://creativecommons.org/licenses/by-nc-nd/4.0/
title Turbine design dependency to turbulence: An experimental study of three scaled tidal turbines
spellingShingle Turbine design dependency to turbulence: An experimental study of three scaled tidal turbines
Michael Togneri
title_short Turbine design dependency to turbulence: An experimental study of three scaled tidal turbines
title_full Turbine design dependency to turbulence: An experimental study of three scaled tidal turbines
title_fullStr Turbine design dependency to turbulence: An experimental study of three scaled tidal turbines
title_full_unstemmed Turbine design dependency to turbulence: An experimental study of three scaled tidal turbines
title_sort Turbine design dependency to turbulence: An experimental study of three scaled tidal turbines
author_id_str_mv 7032d5a521c181cea18dbb759e1ffdeb
author_id_fullname_str_mv 7032d5a521c181cea18dbb759e1ffdeb_***_Michael Togneri
author Michael Togneri
author2 Myriam Slama
Grégory Pinon
Charifa El Hadi
Michael Togneri
Benoît Gaurier
Grégory Germain
Jean-Valéry Facq
José Nuño
Pablo Mansilla
Erwann Nicolas
Julie Marcille
André Pacheco
format Journal article
container_title Ocean Engineering
container_volume 234
container_start_page 109035
publishDate 2021
institution Swansea University
issn 0029-8018
doi_str_mv 10.1016/j.oceaneng.2021.109035
publisher Elsevier BV
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering
url http://dx.doi.org/10.1016/j.oceaneng.2021.109035
document_store_str 1
active_str 0
description In this paper the turbulence effects are studied for three rotors mounted on the same instrumented hub. Two scaled models of industrial turbines and one open-geometry turbine are considered. The turbulence characteristics are obtained from 2D Laser Doppler Velocimeter measurements and the turbine behaviour is analysed from thrust and torque measurements. Three turbulence intensities and a large range of tip speed ratios and flow velocities are considered. The results are anonymised in order to ensure confidentiality. The rotors have different blade profiles, blade numbers and solidity. The rotor design largely modifies the mean power and thrust coefficients. The turbulence intensity only slightly changes these results but has a larger influence on the fluctuating loads than the different rotor designs. The spectral analysis of the rotor torque and thrust shows that, at low frequencies the load variations are correlated to those of the flow velocity with some differences due to the turbulence intensity levels. The coherences between the loads and the velocity seem to be not affected by the rotor type. At high frequencies, the load variations are correlated to the speed control unit of the scaled model and the rotor design has an impact on the rotational speed and loads coherences.
published_date 2021-08-01T04:12:28Z
_version_ 1763753851045806080
score 11.03559

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