Investigation of Boundary-Layer Separation for Lifting Surfaces

Groß, Andreas; Balzer, Wolfgang; Fasel, Hermann F.

doi:10.1109/hpcmp-ugc.2010.9

Cited by 2 publications

(1 citation statement)

References 13 publications

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“…The 2-D N-S algorithm has been used to perform the performance of the wind turbine airfoil [1]. Both the inclusion of free-stream turbulence and the development of hybrid RANS\LES models allows for simulations of flows that are closer to the practical application [2]. Furthermore, roughness can postpone the stall phenomenon [3].With the increase of the airfoil leading edge roughness, the aerodynamic performance of the wind turbine may drop up to 40% of its clean surface [4].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Influence with Surface Contamination on Aerodynamic Performance of Dedicated Wind Turbine Airfoil

2013

AMR

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A Numerical simulation on the influence of airfoil surface contamination on the aerodynamic performance of wind turbines was performed. It chose the dedicated wind turbine airfoil as the research object. The k-ω Shear Stress Transmission (SST) turbulence model was selected for CFD calculation. The roughness height which arranged evenly on the airfoil was changed from 0.03mm to 2.0mm to obtain the sensitive roughness. The airfoil was divided into 18 sections for analyzing the effect on the lift & the drag coefficient, due to various locations of sensitive roughness. By comparing the result computed by XFOIL and CFD calculation, it can be known this airfoils sensitive locations in suction surface and pressure surface. The sensitive locations in suction surface were 53% and 92% from the chord line towards the leading edge, while 44% and 88% in pressure surface. The sensitive roughness in sensitive locations delayed the location of the transition point.

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