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Aerodynamic Effects of Gurney Flaps on the Rotor Blades of a Research Wind Turbine

Jörg Alber, Rodrigo Soto-Valle, Marinos Manolesos, Sirko Bartholomay, Christian Navid Nayeri, Marvin Schönlau, Christian Menzel, Christian Oliver Paschereit, Joachim Twele, Jens Fortmann

Wind Energy Science, Volume: 5, Issue: 4, Pages: 1645 - 1662

Swansea University Author: Marinos Manolesos

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DOI (Published version): 10.5194/wes-2020-40

Abstract

This paper investigates the aerodynamic impact of Gurney flaps on a research wind turbine of the Hermann-Föttinger Institute at the Technische Universität Berlin. The rotor radius is 1.5 meters and the blade configurations consist of the clean and the tripped baseline cases emulating the effects of...

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Published in: Wind Energy Science
ISSN: 2366-7443 2366-7451
Published: Copernicus GmbH 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa55425
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spelling 2020-12-11T09:42:13.5887319 v2 55425 2020-10-15 Aerodynamic Effects of Gurney Flaps on the Rotor Blades of a Research Wind Turbine 44a3e0d351ccd7a8365d5fc7c50c8778 Marinos Manolesos Marinos Manolesos true false 2020-10-15 FGSEN This paper investigates the aerodynamic impact of Gurney flaps on a research wind turbine of the Hermann-Föttinger Institute at the Technische Universität Berlin. The rotor radius is 1.5 meters and the blade configurations consist of the clean and the tripped baseline cases emulating the effects of forced leading edge transition. The wind tunnel experiments include three operation points based on tip speed ratios of 3.0, 4.3 and 5.6, reaching Reynold numbers of approximately 250,000. The measurements are taken by means of three different methods; Ultrasonic Anemometry in the wake, surface pressure taps in the mid-span blade region and strain gauges at the blade root. The retrofit application consists of two Gurney flap heights of 0.5 % and 1.0 % in relation to the chord length, which are implemented perpendicular to the pressure side at the trailing edge. As a result, the Gurney flap configurations evoke performance improvements in terms of the axial wake velocities, the angles-of-attack and the lift coefficients. The enhancement of the root bending moments imply an increase of both the rotor torque and the thrust. Furthermore, the aerodynamic impact appears to be more pronounced in the tripped case compared to the clean case. Gurney flaps are considered a worthwhile passive flow-control device in order to alleviate the adverse effects of early separation and leading edge erosion of horizontal axis wind turbines. Journal Article Wind Energy Science 5 4 1645 1662 Copernicus GmbH 2366-7443 2366-7451 30 11 2020 2020-11-30 10.5194/wes-2020-40 http://dx.doi.org/10.5194/wes-2020-40 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2020-12-11T09:42:13.5887319 2020-10-15T17:23:55.8980417 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Jörg Alber 1 Rodrigo Soto-Valle 2 Marinos Manolesos 3 Sirko Bartholomay 4 Christian Navid Nayeri 5 Marvin Schönlau 6 Christian Menzel 7 Christian Oliver Paschereit 8 Joachim Twele 9 Jens Fortmann 10 55425__18868__047818d69d5f441ea1156a76f574444f.pdf 55425.pdf 2020-12-11T09:41:52.9562118 Output 5946145 application/pdf Version of Record true false eng https://creativecommons.org/licenses/by/4.0/
title Aerodynamic Effects of Gurney Flaps on the Rotor Blades of a Research Wind Turbine
spellingShingle Aerodynamic Effects of Gurney Flaps on the Rotor Blades of a Research Wind Turbine
Marinos Manolesos
title_short Aerodynamic Effects of Gurney Flaps on the Rotor Blades of a Research Wind Turbine
title_full Aerodynamic Effects of Gurney Flaps on the Rotor Blades of a Research Wind Turbine
title_fullStr Aerodynamic Effects of Gurney Flaps on the Rotor Blades of a Research Wind Turbine
title_full_unstemmed Aerodynamic Effects of Gurney Flaps on the Rotor Blades of a Research Wind Turbine
title_sort Aerodynamic Effects of Gurney Flaps on the Rotor Blades of a Research Wind Turbine
author_id_str_mv 44a3e0d351ccd7a8365d5fc7c50c8778
author_id_fullname_str_mv 44a3e0d351ccd7a8365d5fc7c50c8778_***_Marinos Manolesos
author Marinos Manolesos
author2 Jörg Alber
Rodrigo Soto-Valle
Marinos Manolesos
Sirko Bartholomay
Christian Navid Nayeri
Marvin Schönlau
Christian Menzel
Christian Oliver Paschereit
Joachim Twele
Jens Fortmann
format Journal article
container_title Wind Energy Science
container_volume 5
container_issue 4
container_start_page 1645
publishDate 2020
institution Swansea University
issn 2366-7443
2366-7451
doi_str_mv 10.5194/wes-2020-40
publisher Copernicus GmbH
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 Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
url http://dx.doi.org/10.5194/wes-2020-40
document_store_str 1
active_str 0
description This paper investigates the aerodynamic impact of Gurney flaps on a research wind turbine of the Hermann-Föttinger Institute at the Technische Universität Berlin. The rotor radius is 1.5 meters and the blade configurations consist of the clean and the tripped baseline cases emulating the effects of forced leading edge transition. The wind tunnel experiments include three operation points based on tip speed ratios of 3.0, 4.3 and 5.6, reaching Reynold numbers of approximately 250,000. The measurements are taken by means of three different methods; Ultrasonic Anemometry in the wake, surface pressure taps in the mid-span blade region and strain gauges at the blade root. The retrofit application consists of two Gurney flap heights of 0.5 % and 1.0 % in relation to the chord length, which are implemented perpendicular to the pressure side at the trailing edge. As a result, the Gurney flap configurations evoke performance improvements in terms of the axial wake velocities, the angles-of-attack and the lift coefficients. The enhancement of the root bending moments imply an increase of both the rotor torque and the thrust. Furthermore, the aerodynamic impact appears to be more pronounced in the tripped case compared to the clean case. Gurney flaps are considered a worthwhile passive flow-control device in order to alleviate the adverse effects of early separation and leading edge erosion of horizontal axis wind turbines.
published_date 2020-11-30T04:09:37Z
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score 11.013148

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