Unsteady Double Wake Model for the Simulation of Stalled Airfoils

Néstor Ramos-García, Antoine Cayron, Jens Nørkær Sørensen

Department of Wind Energy, Fluid Mechanics Section, Technical University of Denmark, Lyngby, Denmark.

DOI: 10.4236/jpee.2015.37004                

Abstract

In the present work, the recent developed Unsteady Double Wake Model, USDWM, is used to simulate separated flows past a wind turbine airfoil at high angles of attack. The solver is basically an unsteady two-dimensional panel method which uses the unsteady double wake technique to model flow separation and its dynamics. In this paper, the calculated integral forces have been successfully validated against wind tunnel measurements for the FFA-W3-211 airfoil. Furthermore, the computed highly unsteady flow field is analyzed in detail for a set of angles of attack ranging from light to deep stall conditions. 

Keywords

Wind Energy, Airfoil, Separated Flow, Stall, Panel Method

Conflicts of Interest

The authors declare no conflicts of interest.

References

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