选用华锐风电1.5 MW变速恒频双馈式风力发电机SL1500/61为基本模型,对装配3种不同类型导流罩的风力发电机组机舱与叶片进行融合建模,通过数值模拟分析方法进行整体模型的合理性验证.在极限风速下分析3种导流罩及机舱附近流场的空气动力学特性,结果表明,风机叶片的尾流速度差距约1m/s,阻力型导流罩前端的高压面积最大,装配W型导流罩的风机机舱表面压力特性优于其他类型,不同导流罩表面的涡粘性存在明显的差距.叶片融合技术可以较好地解决叶片根部与导流罩端壁连接处所存在的角区流动现象,达到减小误差的导流效果.%SL1500/61 which is Sinovel 1.5 MW wind turbine with variable speed constant frequency doubly-fed induction generator is chose as the basic model. Hub with three different types of nose cone and blades are fusion modeled, then verified the rationality of the whole model through numerical simulation method. Under extreme wind velocity of three conditions analysis aerodynamic characteristics near the flow fields of nose cone and nacelle, the results show that blades' wake velocity difference is about 1 m/s, there is largest high pressure area at the frond part of resistance-type nose cone, with a W-type nose cone e pressure characteristics of nacelle surface are superior to other types,eddy viscosity is obvious different with the surface of nose cones. Blade fusion technology could remarkably solve flow of angular area between the blade root and nose cone endwall to reduce the error of diversion effect.
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