Windresistant design(2)

[62] Fatigue Damage Evaluation of Wind Turbines based on LES Estimation of Turbulent Characteristics over Complex Terrain

○Yuki Sakai¹, Tetsuro Tamura², Hitomitsu Kikitsu³, Hidenori Kawai², Yusuke Maruyama⁴ (1.Shimizu Corporation, 2.Tokyo Institute of Technology, 3.National Institute for Land and Infrastructure Management, 4.Maeda Corporation)

Keywords:Large Eddy Simulation, Complex terrain, Wind turbine, Fatigue damage evaluation

The importance of bridge maintenance has been increasing to prevent from the corrosion in coastal area. Bridges located in coastal area are damaged by airborne sea salt. Therefore, various methods to predict the detailed behavior of airborne sea salt have been developed.
In the present study, we studied the experimental method to estimate the amount of the adhesion on the surface of a bridge. We injected a mist including salt particles into a wind tunnel. The ion electrode method was used in order to measure the amount of salt particles adhered to a bridge model. As a result, we were able to estimate clear differences at each surface of the square cylinder according to the flow patterns.