中文摘要：

针对跨声速后掠翼,三维鼓包串作为一种有效的减阻方式具有结构简单、高效及鲁棒性好等优点.利用全局优化算法探索了鼓包设计参数空间的整体特性,并对鼓包长度、三维鼓包展向设计参数对鼓包减阻效果的影响进行了研究,发现鼓包顶点位置和高度对阻力系数最敏感,三维鼓包的展向设计参数则对阻力系数不敏感,而鼓包长度和鼓包相对展长越长越有利于减阻.在此基础上开展了小后掠角自然层流机翼加3种不同类型鼓包串的优化研究,通过优化结果发现,增加优化后的三维鼓包串,可将小后掠角自然层流机翼阻力发散马赫数向后推移,并且鼓包平均长度和控制区越大,效果越好.三维鼓包串具有良好的局部控制特性,可用于局部较强激波的抑制.三维鼓包串对常规后掠翼波阻具有良好的控制效果,同时能够抑制激波诱导的机翼后缘气流分离.

英文摘要：

For sweep wing at transonic speed, 3-D bump serials as an effective way of drag reduction have simple structure, high efficiency and good robustness. Using global optimization algorithm to explore the design parameter space, the bump length, 3 D bump spanwise design parameters for the influence of design parameters on the bump drag reduction effect were studied, finding that bump peak position and height of drag coefficient were the most sensitive, 3-D bump spanwise design parameters were not sensitive to the drag coefficient, and the bigger bump length and bump relatively spanwise length were more conducive to drag reduction. Based on this, optimization research into the sweep natural laminar wing with three different types bump serials were carried out. Through the optimization results, it shows that the drag divergence Mach number of sweep natural laminar wing can be increased by 3-D bumps serials, the larger average bump length and control area means the better effect; 3-D bump serials have good local control features, so that they can be used for partial inhibition of strong shock wave. 3-D bump serials have good effect on wave drag of conventional sweep wings wave drag, and can restrain the trailing edge flow separation in- duced by shock wave.