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Experimental investigation of the effect of the Reynolds number on the performance of a micro-scale and low tip-speed ratio wind turbine

Communication avec acte
Auteur
BOURHIS, Martin
ccRAVELET, Florent
1003528 Laboratoire d'Ingénierie des Fluides et des Systèmes Énergétiques [LIFSE]
ccPEREIRA, Michaël

URI
http://hdl.handle.net/10985/22480
Date
2022

Résumé

Micro-scale wind turbines are of great interest to supply rechargeable batteries of autonomous sensors in the field of the Internet Of Things (IOT). However, they face the issue of lower dimensionless performance than large-scale wind turbines. Due to their small size and low operating wind speed, these runners operate mainly in low Reynolds number flow conditions at which the aerodynamic properties of the blades are not well-known. Even though promising results are reported on the Reynolds number effects on isolated and non rotating blades, their applicability to design efficient small rotating energy harvesters is questionable. This paper reports on the influence of the Reynolds number on the performance of high-solidity and low tip-speed ratio micro-scale wind turbines. Wind turbine’s power and torque coefficient vs. tip-speed ratio curves are measured in wind tunnel for a wide range of Reynolds number by changing either the turbine’s diameter or the free-stream wind velocity. This quantitative analysis will contribute to design more efficient wind energy harvesters.

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  • Laboratoire Ingénierie des fluides Systèmes énergétiques (LIFSE)

Documents liés

Visualiser des documents liés par titre, auteur, créateur et sujet.

  • Performance and flow characteristics of the optimum rotors of Betz, Joukowsky, and Glauert at low tip-speed ratio 
    Article dans une revue avec comité de lecture
    ccBOURHIS, Martin; ccPEREIRA, Michaël; ccRAVELET, Florent (AIP Publishing, 2022-10)
    The advent of the Internet of Things technology has led to a renewed interest in the use of low tip-speed ratio micro-scale wind turbines to supply power to battery-less microsystems. At low tip-speed ratio ( λ), the blade ...
  • Experimental investigation of the effects of the Reynolds number on the performance and near wake of a wind turbine 
    Article dans une revue avec comité de lecture
    ccBOURHIS, Martin; ccPEREIRA, Michaël; ccRAVELET, Florent (Elsevier BV, 2023-06)
    Wind tunnel experiments provide worthwhile insights for designing efficient micro wind energy harvesters and large-scale wind turbines. As wind tunnel tests with large-scale wind turbines are expensive and not always ...
  • Numerical Assesment of a Small-Scale and Very Low Tip Speed Ratio Wind Turbine 
    Article dans une revue avec comité de lecture
    BOURHIS, Martin; DOBREV, Ivan; ccRAVELET, Florent; ccPEREIRA, Michaël (EDP Sciences, 2021)
    The aim of this paper is to study by CFD the performance and to characterize the velocity fields in the wake of an horizontal axis wind turbine. The design of this wind turbine is far from classical as it has been designed ...
  • Innovative design method and experimental investigation of a small-scale and very low tip-speed ratio wind turbine 
    Article dans une revue avec comité de lecture
    BOURHIS, Martin; ccPEREIRA, Michaël; DOBREV, Ivan; ccRAVELET, Florent (Elsevier BV, 2021)
    Small horizontal axis wind turbines operating at low wind speeds face the issue of low performance compared to large wind turbines. A high amount of torque is required to start producing power at low wind speed to overtake ...
  • Experimental investigation of the effect of blade solidity on micro-scale and low tip-speed ratio wind turbines 
    Article dans une revue avec comité de lecture
    BOURHIS, M.; ccRAVELET, Florent; ccPEREIRA, Michaël (Elsevier BV, 2023-01)
    It is well-established that micro-scale wind turbines require high blade solidity in order to overtake friction torque of all mechanical parts and starts operating. Therefore, multi-bladed micro-scale rotors with a low ...

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