6 research outputs found
CFD simulations and evaluation of applicability of a wall roughness model applied on a NACA 63 3
No full textThe Effect of Upscaling and Performance Degradation on Onshore Wind Turbine Lifetime Extension Decision Making
No full textSome Thoughts on Mapping Tribological Issues of Wind Turbine Blades Due to Effects of Onshore and Offshore Raindrop Erosion
No full textPredicting the Influence of Surface Protuberance on the Aerodynamic Characteristics of a NACA 63 3
Get PDFLeading Edge Roughness (LER) has become a critical challenge for wind turbine operators, often reducing the energy production of their turbines. LER has not yet been systematically categorized, and the transfer function between height/extent of roughness and the aerodynamic performance has not been established. A common method for emulating LER is to use zigzag tape or distributed sand grain roughness in a wind tunnel. This paper contains 2D and 3D CFD simulations and wind tunnel tests with zigzag tape on a NACA 633-418 airfoil, to evaluate the changes in aerodynamic characteristics. Because 3D CFD requires a vast amount of computing power, it is investigated if 2D simulation gives a sufficient level of accuracy
