摘要
联结翼布局与常规布局相比具有结构重量轻、诱导阻力小、升力系数大、稳定性良好的特点。本文选取5个对联结翼布局影响明显的设计变量,利用数值模拟的方法研究不同设计变量对联结翼气动特性的影响。同时,应用了旨在提高优化计算效率的响应面方法。在优化设计中采用模拟退火算法对目标函数进行优化求解。研究结果表明,在机翼面积不变的情况下,增大前、后翼弦向距离以及两翼间的翼隔,采用V型翼差角布局方式,能有效降低两翼间的相互干扰,增大升阻比。
The joined-wing,characterized by low structural weight,small induced drag,big lift coefficient and good stability,is different from normal layout.Five design variables which have significant effect on the joined-wing are selected,and influence on the aerodynamic performance of joined-wing is analyzed by numerical simulation in this paper.Moreover,response surface methodology is applied to improve optimization efficiency,and simulated annealing algorithm is used to solve objective functions in optimization design.The results show that increasing average aerodynamic chord length of front and aft wing and space between them,with V-type decal age and invariable wing area,could reduce the interference and increase lift-drag ratio effectively.
出处
《空气动力学学报》
EI
CSCD
北大核心
2010年第1期113-118,共6页
Acta Aerodynamica Sinica
关键词
联结翼
气动特性
k-ε湍流模型
响应面法
优化设计
joined wing aerodynamic characteristic k-ε turbulence Response Surface Methodology（RMS） optimizition design
