Leading edge erosion (LEE) of wind turbine blades is a major concern for the wind turbine industry. LEE leads to increased blade surface roughness and incurs significant repair and maintenance costs. To address this issue, the present paper proposes an active LEE mitigation method by operating wind turbines in an erosion-safe mode with reduced rotor speed during precipitation. The proposed...
Lidar-based wind sensing technology, originally used in the wind energy sector, is now being utilized in wind engineering to monitor wind action for designing fjord-crossing infrastructure like long-span bridges. Accurate estimation of design wind loads is crucial for the design process of such bridges. This paper examines wind data from two pairs of long-range lidars positioned along one side...
Since dynamic offshore power cable configurations incorporate buoyancy elements, it is essential to understand their forces and flow characteristics. This study investigates the stepped cylinder resembling such a configuration, where the buoyancy element has a sharp, chamfered, or filleted edge. The numerical simulations use the Partially Average Navier Stokes (PANS) turbulence model. Its...
This contribution provides an overview of the wind engineering studies conducted at the Lysefjord bridge in Norway from 2013 to 2023. The study was initiated to investigate the bridge wind-induced response in natural atmospheric flow, in complex terrain. The bridge's structural response under varying wind conditions has been examined using a weather station, sonic anemometers, and...
The study deals with the wind flow measurements performed on campus of the University of Stavanger, using three commercial lidars. Two horizontally pointing, continuous-wave Doppler lidars are deployed at 16 m height, on the roof of Kjølv Egeland’s building at the northwest end of the campus, and a vertical continuous-wave profiler is installed at an elevation of 4 m on the roof of Ivar...
