CFD Validation of a Model Wind Turbine by Means of Improved and Delayed Detached Eddy Simulation in OpenFOAM

Camilo A. Sedano, Frederik Berger, Hamid Rahimi, Omar D. Lopez Mejia, Martin Kühn and Bernhard Stoevesandt
Additional contact information
Camilo A. Sedano: Fraunhofer IWES, Küpkersweg 70, 26129 Oldenburg, Germany
Frederik Berger: Institute of Physics, ForWind—University of Oldenburg, Küpkersweg 70, 26129 Oldenburg, Germany
Hamid Rahimi: Fraunhofer IWES, Küpkersweg 70, 26129 Oldenburg, Germany
Omar D. Lopez Mejia: Department of Mechanical Engineering, Universidad de los Andes, Cra 1 Este N 19A-40, Bogotá 111711, Colombia
Martin Kühn: Institute of Physics, ForWind—University of Oldenburg, Küpkersweg 70, 26129 Oldenburg, Germany
Bernhard Stoevesandt: Fraunhofer IWES, Küpkersweg 70, 26129 Oldenburg, Germany

Energies, 2019, vol. 12, issue 7, 1-16

Abstract: With the ongoing increase in the size of wind turbines, experimental investigations have become more complicated and expensive. Therefore, computational models have proven to be a viable solution for design purposes. This article aims to validate CFD simulations of an experimental model wind turbine (MoWiTO 1.8) using Delayed Detached Eddy Simulation (DDES) and Improved DDES (IDDES) turbulence modelling approaches. For the purpose of validation, integral quantities (such as power, thrust, torque and blade-root bending moment in the flapwise direction) measured in the wind tunnel are compared with numerical results obtained with OpenFOAM. In general, the computational results show a very good agreement with the measurements for most of the monitored quantities. In particular, the blade-root bending moment presents the largest difference, taking into account that the simulation assumes the turbine blades are rigid. Nevertheless, the simulation does achieve in recreating the turbulent behavior as can be evidenced by the Power Spectral Density graphs, and the wake’s velocity measurements. In general, the IDDES turbulent model achieves a better agreement to the experimental results, while maintaining a very similar computational time as the DDES model.

Keywords: computational fluid dynamics; OpenFOAM; DDES; MoWiTO 1.8; wind turbine aerodynamics (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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