Structural And Aeroelastic Stability Analysis Methods Of Wind Turbine Rotor

摘要：

Aeroelastic phenomena of a wind turbine include stall-induced vibrations and classical flutters. The classical flutter occurs due to coalescences between bending mode and torsion mode. It is typical aeroelastic instabillity of aircraft wings.Unlike the classical flutter, the stall-induced vibration is the instability in lead-lag mode due to negative aerodynamic dampings. In the present study, the three degree of freedom aeroelastic model of a wind turbine blade is introduced to characterize and analyze its aeroelastic phenomena. The numerical results show that the aeroelastic stability of flap-lag motion is more unstable that that of flap-pitch motion and the aeroelastic characteristics of lea-lag motion can become unstable as wind speed increases.

关键词： Aeroelasticity Stall Flutter Instability

作者: Seokwoo Kim Jae-Sung Bae

作者单位: Korea Institute of Energy Research;71-2 Jang-dong,Daejeon,Korea Korea Aerospace University;Hwajeon-dong,Goyang,Gyeonggi-do,Korea

会议类型: 国际会议

会议名称: 第四届全球风能大会暨2008北京国际风能大会

会议地点: 北京

会议语种:英文

在线出版日期: 2008-10-29（万方平台首次上网日期，不代表论文的发表时间）