基于升力线理论的风力机气动性能分析方法

为了提高风力机气动载荷的三维计算能力与计算稳定性,采用螺旋尾涡升力线模型来研究叶片气动性能参数.通过对附着涡分布、控制点的诱导速度以及迭代法求解算法等问题进行研究和分析,计算了风力机的各项气动性能参数,并建立了基于螺旋尾涡升力线模型的水平轴风力机风轮气动性能数值分析算法.在FORTRAN平台中创建了分析程序,计算了风力机的气动载荷并与传统叶素动量理论进行了对比.结果表明,所开发的数值计算模型具有较高的计算能力与计算稳定性.

Wind turbine aerodynamic performance analysis method based on lift line theory

In order to improve the three-dimensional calculation ability and calculation stability of aerodynamic loads, a spiral wake vortex lift line model was used to study the aerodynamic performance parameters of blade. Through the research and analysis of bound vortex distribution, induced velocity of control points and solution of iterative algorithm, the aerodynamic performance parameters of wind turbine were calculated, and a numerical analysis algorithm for the aerodynamic performance of horizontal axis wind turbine based on the spiral wake vortex lift line method was established. An analysis program was developed on FORTRAN platform, and the aerodynamic loads of wind turbine were calculated and compared with those obtained by using traditional blade momentum theory. The results show that the as-developed numerical calculation model possesses great calculation ability and stability.