Large-eddy simulations of S826 airfoil with Discontinuous Galerkin Methodology
(2014) 10th PhD Seminar on Wind Energy in Europe — Location: Orléans (28.October.2014)
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- Abstract
- The aim of the present work is to improve the understanding of low Reynolds flow physics by performing Large-Eddy Simulations (LES) of the NREL S826 airfoil. The paper compares the results obtained with a novel high order code based on the Discontinuous Galerkin Method (ArgoDG) and a recent experiment performed at the Technical University of Denmark. Chordwise pressure evolutions, integrated lift and drag forces are compared at Reynolds number 4.104 and angles of attack (AoA) 10 and 12 degrees. Important differences are observed between the simulations and the experiment. These differences are, however, partially explained by the strong sensitivity to the tunnel environment. To overcome this source of error, the ArgoDG LES results are also compared to LES performed with the Finite Volume Method (FVM) code EllipSys3D, a well established wind turbine Computational Fluid Dynamics (CFD) code. The similarity of the results obtained by these two inherently different methodologies provide strong confidence in the validity of the computations.
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Frère, A., Sarlak, H., Mikkelsen, R., Chatelain, P., & Hillewaert, K. (2014). Large-eddy simulations of S826 airfoil with Discontinuous Galerkin Methodology. 10th PhD Seminar on Wind Energy in Europe, Orléans. https://hdl.handle.net/2078.5/182310