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심재박(Jae-park Sim),김동현(Dong-Hyun Kim),김기하(Ki-ha Kim) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.5
In this study, the design and verification of small V-shaped vertical-axis wind turbine (VAWT) has been conducted using advanced CAE technique based on computational fluid dynamics (CFD), finite element method (FEM). Also, optimized airfoil shapes are investigated and numerically tested to obtain best aerodynamic power characteristic and several blade models with different geometric parameters are tested in order to yield maximized performance of the developed VAWT model. The prototypes of optimized VAWT models are constructed by our research team and effectively tested by vehicle mounted testing system (VAWT) during short period. Related computational results for aerodynamic, structural, and vibration analyses are presented and typical power curve of the developed model is presented as well<br/> <br/>
타워강성 효과를 고려한 소형 수직축 풍력발전기 운전 진동실험 및 해석
추헌호(Heon Ho Choo),심재박(Jae Park Sim),류경중(Gyeong Joong Ryu),김동현(Dong Hyun Kim),김봉영(Bong-Yung Kim) 한국소음진동공학회 2011 한국소음진동공학회 학술대회논문집 Vol.2011 No.10
In this study, operational vibration experiment and analysis have been conducted for the 4-blade small vertical-axis wind turbine (VAWT) including the effect of tower elastic behavior. Computational structural dynamics analysis method is applied to obtain Campbell diagram for the VAWT with elastic tower. An open type wind-tunnel is used to change and keep the wind velocity during the ground test. Equivalent reduced elastic tower is supported to the VAWT so that the elastic stiffness effect of the tower can be reflected to the present vibration experiment. Various excitation sources with aerodynamic forces are considered and the dominant operating vibration phenomena are physically investigated in detail.