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2019 | OriginalPaper | Chapter

Simple Models for Cross Flow Turbines

Authors : Esteban Ferrer, Soledad Le Clainche

Published in: Recent Advances in CFD for Wind and Tidal Offshore Turbines

Publisher: Springer International Publishing

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Abstract

Using a high order discontinuous Galerkin numerical method with sliding meshes, we simulate one, two and three bladed cross-flow turbines to extract statistics of the generated wakes (time averaged velocities and Reynolds stresses). Subsequently, we compare the wakes resulting from simple models (a circular cylinder and an actuator disc) to the time averaged cross-flow turbine wakes. Additionally, we provide results for a reduced order model based on dynamic mode decomposition (Le Clainche and Ferrer, Energies, 11(3), 2018, [1]). Whilst simplified models find difficulties in capturing wake asymmetries characteristic of cross-flow turbines, our proposed reduced order model captures mean values and Reynolds stresses with good accuracy, showing the potential of the last technique to speed up the simulation of cross-flow turbine statistics.

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next chapter Suppressing Vortex Induced Vibrations of Wind Turbine Blades with Flaps
Footnotes
1
Airfoil aerodynamics and hydrofoil hydrodynamics are equivalent nomenclatures for foils operating in air or water environments. Since this work encompasses both wind and tidal turbine applications, from this point onwards, “foils” will denote either “airfoils” or “hydrofoils”. In addition, the term “aerodynamic” can always be replaced by “hydrodynamic” in this work.
 
Literature
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2.
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Metadata
Title
Simple Models for Cross Flow Turbines
Authors
Esteban Ferrer
Soledad Le Clainche
Copyright Year
2019
Book
Recent Advances in CFD for Wind and Tidal Offshore Turbines

Print ISBN: 978-3-030-11886-0

Electronic ISBN: 978-3-030-11887-7

Copyright Year: 2019

DOI
https://doi.org/10.1007/978-3-030-11887-7_1