A simple 3D river/tidal turbine model for farm computation – Comparison with experiments

Vincent Clary 1 Thibault Oudart 1 Thierry Maître 1 Joël Sommeria 1 Wassim Zeidan Luis Morocho Ali Makhour Philippe Larroudé 1 Tristan Vandenberghe 1 Laure Vignal 1 Michel Riondet 1 Florence Joussellin 1 Mathieu Rodriguez 2 Khoa Borzeix Olivier Bertrand 3 Julien Schaguene 3
1 LEGI - Laboratoire des Écoulements Géophysiques et Industriels [Grenoble]
2 CERG - Centre d'Etudes et de Recherche de Grenoble
3 Artelia Eau & Environnement [Echirolles]
Abstract : A simple CFD modeling using force source terms in the momentum equation is implemented, with the aim of computing the performance of a Darrieus turbine in its exploitation area and simulating the wake created behind the turbine. It uses the RANS solution method to reproduce ambient turbulent flow conditions with relatively low computational costs. The force distribution used is three-dimensional and has been calculated prior to implementation using a single URANS simulation of the flow through the real geometry of the turbine. To take into account the velocity and turbulent conditions of the flow impacting the turbine, forces can be corrected by the total forces obtained experimentally on a reduced-scale model for different flow cases. The impact on the turbine of upstream turbulence generated by a grid is studied experimentally. The power coefficient, drag force and transverse component of the force on the turbine are studied, as well as the shape and extension of its wake using Particle Imaging Velocimetry. Simplified models with different levels of detail are compared to the experimental data. The results turn out to be in good agreement in the far-wake, with an underestimation of the flow deficit in the near-wake.
Keywords : Vertical axis stream turbine Turbine wake Array power production Cross-flow hydrokinetic turbine
Type de document :
Communication dans un congrès
Sixth International Conference on Estuaries and Coasts (ICEC-2018),, Aug 2018, Caen, France
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https://hal.archives-ouvertes.fr/hal-01897925
Contributeur : Vincent Clary <>
Soumis le : mercredi 17 octobre 2018 - 17:21:51
Dernière modification le : lundi 18 février 2019 - 16:44:13
Document(s) archivé(s) le : vendredi 18 janvier 2019 - 15:39:26

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Vincent Clary, Thibault Oudart, Thierry Maître, Joël Sommeria, Wassim Zeidan, et al.. A simple 3D river/tidal turbine model for farm computation – Comparison with experiments. Sixth International Conference on Estuaries and Coasts (ICEC-2018),, Aug 2018, Caen, France. 〈hal-01897925〉

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