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采用数值模拟方法对鼓包的减阻作用机制进行了研究,并使用差分进化算法对鼓包进行了优化设计。针对NASA SC(2)-0714翼型,分析了鼓包参数对翼型流动及气动性能的影响规律,并得到了减阻率为13.1%的鼓包。结果表明:鼓包参数(安装位置、鼓包高度和鼓包长度)是影响减阻效果的重要因素。差分进化算法能较好地应用于鼓包的优化设计,对鼓包技术的应用发展具有重要意义。
The numerical simulation method was used to study the drag reduction mechanism of drum and the optimal design was made using the differential evolution algorithm. According to the NASA SC (2) -0714 airfoil, the influence laws of the bulge parameters on the airfoil flow and aerodynamic performance were analyzed, and the bulge with the drag reduction rate of 13.1% was obtained. The results show that the parameters of drum bulge (installation position, drum height and drum length) are the important factors that affect the drag reduction effect. Differential evolution algorithm can be better applied to optimize the design of the drum kits, drum kits technology application development is of great significance.