Results of the AVATAR project for the validation of 2D aerodynamic models with experimental data of the DU95W180 airfoil with unsteady flap

The Science of Making Torque from Wind

Ferreira, C.^1 ; Gonzalez, A.^2 ; Baldacchino, D.^1 ; Aparicio, M.^2 ; Gómez, S.^2 ; Munduate, X.^2 ; Garcia, N.R.^3 ; Sørensen, J.N.^5 ; Jost, E.^4 ; Knecht, S.^4 ; Lutz, T.^4 ; Chassapogiannis, P.^5 ; Diakakis, K.^5 ; Papadakis, G.^5 ; Voutsinas, S.^5 ; Prospathopoulos, J.^5 ; Gillebaart, T.^1 ; Van Zuijlen, A.^1

DUWIND, Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, Delft

2629HS, Netherlands^1

CENER - National Renewable Energy Centre, Ciudad de la Innovacion 7, Sarriguren, Navarra

31621, Spain^2

Technical University of Denmark, Department of Wind Energy, RisøCampus, Frederiksborgvej 399, Roskilde

4000, Denmark^3

Institute of Aerodynamics and Gas Dynamics (IAG), University of Stuttgart, Pfaffenwaldring 21, Stuttgart

70569, Germany^4

Laboratory of Aerodynamics, National Technical University of Athens, Greece^5

关键词: Aerodynamic models;    Aerodynamic tools;    Engineering models;    Experimental database;    Flow control devices;    Large scale wind turbines;    Modelling of flows;    Trailing edge flaps;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/753/2/022006/pdf
DOI  :  10.1088/1742-6596/753/2/022006

来源: IOP

【 摘 要 】

The FP7 AdVanced Aerodynamic Tools for lArge Rotors - Avatar project aims to develop and validate advanced aerodynamic models, to be used in integral design codes for the next generation of large scale wind turbines (10-20MW). One of the approaches towards reaching rotors for 10-20MW size is the application of flow control devices, such as flaps. In Task 3.2: Development of aerodynamic codes for modelling of flow devices on aerofoils and, rotors of the Avatar project, aerodynamic codes are benchmarked and validated against the experimental data of a DU95W180 airfoil in steady and unsteady flow, for different angle of attack and flap settings, including unsteady oscillatory trailing-edge-flap motion, carried out within the framework of WP3: Models for Flow Devices and Flow Control, Task 3.1: CFD and Experimental Database. The aerodynamics codes are: AdaptFoil2D, Foil2W, FLOWer, MaPFlow, OpenFOAM, Q3UIC, ATEFlap. The codes include unsteady Eulerian CFD simulations with grid deformation, panel models and indicial engineering models. The validation cases correspond to 18 steady flow cases, and 42 unsteady flow cases, for varying angle of attack, flap deflection and reduced frequency, with free and forced transition. The validation of the models show varying degrees of agreement, varying between models and flow cases.