|
|
|
| NUMERICAL ANALYSIS OF AEROELASTIC STABILITY FOR TWO-DEGREES OF FREEDOM LARGE HORIZONTAL AXIS TURBINE BLADES |
| ZHU Youfeng ，REN Yongsheng |
| Shandong University of Science & Technology, Qingdao 266510,China |
|
|
|
|
Abstract According to Kallesøe’s equations of blade motion, new model describes two-degrees aeroelastic equations of asymmetric rigidity and general viscous damping, by means of a finite difference discretization and Greenberg aerodynamic theory. A linearized stationary state space of the system can prove the model valid , by analyzing step response graphs and stability of variable parameters such as wind velocities, rotor Speeds, elastic modulus, pitch angles, air densities and densities of blades.
|
|
Received: 01 September 2011
|
|
|
|
|
|
|
2012, Vol. 31 
