后掠翼三维鼓包串激波控制参数的影响
发布时间：2018-07-14 11:32
【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.
[Abstract]:As an effective drag reduction method, three-dimensional drum string has the advantages of simple structure, high efficiency and good robustness. The global optimization algorithm is used to explore the overall characteristics of the drum design parameter space, and the effects of the drum length and the three-dimensional design parameters on the drag reduction effect are studied. It is found that the position and height of the top of the drum are the most sensitive to the drag coefficient, while the design parameters of the three-dimensional drum are not sensitive to the drag coefficient, while the length of the drum and the relative extension of the drum are more favorable to reduce the drag. On the basis of this, the optimization of three different types of drum strings for the natural laminar flow wing with small sweep angle is carried out. Through the optimization results, it is found that the optimized three-dimensional drum string is increased. The Mach number can be diffused from the natural laminar flow wing with small sweep angle, and the larger the average length of bulge and the larger the control zone, the better the effect is. The three-dimensional drum string has good local control characteristics and can be used to suppress local strong shock waves. The three dimensional drum string has a good control effect on the wave resistance of the conventional swept wing and can restrain the shock induced airflow separation at the rear edge of the wing.
【作者单位】： 中国空气动力研究与发展中心高速空气动力研究所;南京航空航天大学航空宇航学院;
【基金】：国家自然科学基金(11372337,91216203,10972233) 中央高校基本科研业务费专项科研项目(NS 2014013)
【分类号】：V211.4
本文编号：2121514
[Abstract]:As an effective drag reduction method, three-dimensional drum string has the advantages of simple structure, high efficiency and good robustness. The global optimization algorithm is used to explore the overall characteristics of the drum design parameter space, and the effects of the drum length and the three-dimensional design parameters on the drag reduction effect are studied. It is found that the position and height of the top of the drum are the most sensitive to the drag coefficient, while the design parameters of the three-dimensional drum are not sensitive to the drag coefficient, while the length of the drum and the relative extension of the drum are more favorable to reduce the drag. On the basis of this, the optimization of three different types of drum strings for the natural laminar flow wing with small sweep angle is carried out. Through the optimization results, it is found that the optimized three-dimensional drum string is increased. The Mach number can be diffused from the natural laminar flow wing with small sweep angle, and the larger the average length of bulge and the larger the control zone, the better the effect is. The three-dimensional drum string has good local control characteristics and can be used to suppress local strong shock waves. The three dimensional drum string has a good control effect on the wave resistance of the conventional swept wing and can restrain the shock induced airflow separation at the rear edge of the wing.
【作者单位】： 中国空气动力研究与发展中心高速空气动力研究所;南京航空航天大学航空宇航学院;
【基金】：国家自然科学基金(11372337,91216203,10972233) 中央高校基本科研业务费专项科研项目(NS 2014013)
【分类号】：V211.4
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