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采用基于Kriging模型的优化设计方法开展了风力机专用翼型的优化设计工作。除了在全湍流条件下进行设计之外,同时还在气动优化设计中耦合层流湍流转捩预测,将翼型上下表面的转捩点作为约束条件,采用基于Kriging模型的优化设计方法实现了考虑转捩影响的风力机翼型优化设计。风力机翼型最大升阻比优化结果表明:在两种条件下,优化得到的翼型气动性能均得到较大提高,均具有较好的粗糙度不敏感性,但相比而言,考虑转捩影响的风力机翼型优化设计能在更加真实的环境下获得气动性能更好的优化设计结果。
The optimal design of airfoil for wind turbine was carried out by Kriging model based optimization design. In addition to the design under full turbulent flow conditions, coupled with the prediction of coupled laminar turbulent flow in the aerodynamic optimization design, the turning points of the upper and lower airfoils are used as constraints, and the optimal design method based on Kriging model is adopted to consider the transition Influencing wind turbine airfoil optimization design. The optimization results of the maximum lift-drag ratio of wind turbine airfoil show that the aerodynamic performance of the airfoil obtained by the optimization is greatly improved under both conditions, and both of them have good roughness insensitivity. However, in comparison,捩 Affected wind turbine airfoil optimization design can obtain better aerodynamic performance in more realistic environment.