基于静气弹性能的风力机翼型设计  

AIRFOIL DESIGN FOR WIND TURBINES BASED ON STATIC-AEROELASTIC PERFORMANCE

作　　者：陈刚[1] 陈进[1] 孙振业 庞晓平[1] Chen Gang;Chen Jin;Sun Zhenye;Pang Xiaoping(State Key Laboratory of Transmission,Chongqing University,Chongqing 4000444,China;College of Hydraulic and Energy Engineering,Yangzhou University,Yangzhou 225127,China)

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400044 [2]扬州大学水利与能源动力工程学院,扬州225127

出　　处：《太阳能学报》2020年第6期8-15,共8页Acta Energiae Solaris Sinica

基　　金：国家高技术研究发展(863)计划(2012AA051301);国家自然科学基金(51175526)。

摘　　要：引入翼型静气弹性能,即气动扭矩对扭转位移的敏感性和扭转位移诱发平移位移的能力,敏感性和能力越低,静气弹性能越好。结合改进的粒子群算法和基于通用集成理论的翼型参数化表达方法,兼顾气动性能和静气弹性能建立优化模型,对现有常用薄翼型NACA 64618进行替代优化设计,新翼型的部分气动性能和静气弹性能都有所提高。就NREL 5 MW参考风力机叶片,用新翼型替换NACA 64618并对额定工况进行仿真,仿真过程中对风速施加一个正弦脉冲,结果表明替换的叶片对脉冲的敏感性低于原叶片,且扭转位移更接近于零,可证明新翼型对叶片的扭转发散有一定抑制作用。The static-aeroelastic performance is introduced,which investigates the sensibility of the aerodynamic torque and intensity of the translational displacement due to the torsional displacement,and less sensibilities and/or intensities means better static-aeroelastic performance.The optimization model is constructed combining the improved particle swarm optimization and the parameterized expression of airfoil based on general integration theory,and with the aerodynamic and static-aeroelastic performances both in consideration.An alternative optimal design for the frequently-used thin airfoil NACA 64618 is conducted using the optimization model.The aerodynamic performance and static-aeroelastic performance are improved in comparing to NACA 64618.Using NREL 5 MW wind turbine blade as reference,the NACA 64618 is replaced by a new airfoil which is simulated under the rated conditions with a sine-shape pulse embedded in the wind speed.The new blade shows less sensitivities to the pulse,and it’s torsional displacement closer to zero.These mean that the new airfoil can inhibit the torsional divergency of blade in some degree.

关 键 词：风力机翼型 粒子群算法 替代设计 通用集成理论 静气弹性能 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程] TH12[机械工程—机械设计及理论]