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中文摘要：
基于网格速度方法,对阵风条件下风力机翼型运动的气动特性进行数值计算。中心格式有限体积法、双时间推进法求解预处理后的非定常N-S方程。计算结果表明：在弦向阵风作用下,翼型的运动能有效降低响应波动峰值,即弦向阵风对运动影响较小;而在法向阵风作用下,气动响应波动很大。计算翼型在不同参数阵风作用下的响应过程,阵风的频率变化对响应影响不大。弦向阵风的幅值增大,叶片运动对阵风响应峰值减缓效果增加;法向阵风的幅值增大1倍,响应峰值也增加1倍。
英文摘要：
Based on the field velocity method,numerical simulation is carried out for the flapping motion of one wind turbine airfoil,and the aerodynamic response of the airfoil on continuous sinusoidal gusty condition is calculated.The finite-volume method based on Jameson cell-centered scheme with artificial dissipation is applied to solve the pre-transformed two-dimensional N-S equations,and the dual-time stepping for multistage schemes is used for time marching.The study shows that the blade flapping with certain kinematics can effectively alleviate the fluctuation of horizontal gust response.The aerodynamic response fluctuates a lot under the vertical gust,while the horizontal gust rarely affects the flapping response.The effects of the parameters of horizontal and vertical gusts on the flapping airfoil aerodynamic performance are also calculated.It shows that the impacts of gust fluctuation frequency are insignificant in gust response.The alleviation is obvious when the horizontal gust amplitude is increased.The response fluctuation is doubled with the doubled amplitude of vertical gust.
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