Prof. Dr. Martin Obligado 

Laboratoire des Ecoulements Geophysics et Industriels (LEGI), FRANCE
Jul 2024 - Sep 2024
Fellow
May 2023 - May 2023
Fellow
Jun 2021 - Aug 2021
Fellow
Jun 2020 - Aug 2020
Fellow

Martin Obligado

Projects & Publications

Abstract

I propose an experimental study on the wake structure of vertical and horizontal axis wind turbines under different laminar and turbulent inflow conditions. This will be achieved by testing scaled models in a wind tunnel, that allows to produce bespoke turbulent inflows. Both types of turbines present several advantages and disadvantages for onshore and offshore wind farms, and there is an intense debate in the wind energy industry and research community about how each type of rotor would perform in different layouts and atmospheric conditions.

The focus of this study is mainly fundamental, as it aims for a better understanding and the characterisation of the turbulent flow created by wind turbines. Nevertheless, it has a direct practical application as it will provide the wind energy industry with a systematic comparison between two types of turbines on the same wind tunnel under realistic inflow conditions. The relevance of this approach is that the comparison between wakes will not be biased by the effects that arise when using different experimental setups, that are known to affect significantly the structure and properties of a wake.

The main objective of this project is therefore to provide a database and back-of-the-envelope models that will help the research community and wind energy industry to choose among the two different families of turbines for a given terrain and operating conditions.

Cooperation partner
Prof. Dr. Joachim Peinke, Carl von Ossietzky Universität Oldenburg
Publications
Obligado, M. I. Neunaber, and M. Hölling (2024). Leading effect for wind turbine wake models. Renewable Energy 23, 223. https://doi.org/10.1016/j.renene.2023.119935
Cooperation partner
Prof. Dr. Joachim Peinke, Carl von Ossietzky Universität Oldenburg
Publications
Neunaber, I., Peinke, J., and Obligado, M. (2022). Application of the Townsend–George theory for free shear flows to single and double wind turbine wakes – a wind tunnel study. Wind Energy Science, 7, 201-219. https://doi.org/10.5194/wes-7-201-2022
Fuchs, A., Obligado, M., Bourgoin, M.G., Mininni, P.D., and J. Peinke (2022). Markov property of Lagrangian turbulence. Europhysics Letters, 5, 137. https://doi.org/10.1209/0295-5075/ac55f1
Neunaber, I., Hölling, M., and Obligado, M. (2022). Wind Tunnel Study on the Tip Speed Ratio’s Impact on a Wind Turbine Wake Development. Energies, 8607, 15. https://doi.org/10.3390/en15228607