摘要
为了扩展机翼优化设计的工程应用范围,在传统气动优化约束的基础上,考虑结构布置的几何约束,对通用飞机层流机翼进行了设计。首先,采用自由变形(FFD)技术作外形参数化处理;然后,采用NSGA-Ⅱ多目标优化算法,基于Kriging代理模型对某型通用飞机机翼进行了优化设计。设计过程考虑自然转捩工况,采用Menter k-ωSST两方程湍流模型和γ-Re_(θt)转捩模型对设计进行评估。计算结果表明,优化后机翼的巡航和爬升升阻比均有所提高、层流区延长、低头力矩变小,但最大升力系数减小了0.141,失速特性略有变差。
In order to extend the scope of engineering application in the optimization design of the wing,on the basis of traditional aerodynamic optimization constraints,considering the geometric constraints of the structure,the laminar flow wing of the general aircraft was designed. Firstly,the free-form deformation technique was used to deal with the configuration parameters,and then the NSGA-Ⅱmulti-objective optimization algorithm and Kriging model were used to optimize the wing of a certain type of aircraft. In the design process,the design was evaluated under natural transition condition with Menter k-ω SST two equation turbulence models and γ-Re_（θt） transition model. The results show that the K of optimized wing is increasing,the laminar region is extending,pitch-down moment is reduced,but the CLmaxis decreased by0. 141,and the performance of stall is slightly worse.
出处
《飞行力学》
CSCD
北大核心
2017年第1期16-20,共5页
Flight Dynamics
基金
辽宁省科学技术计划项目资助(2015020167)
辽宁省百千万人才工程项目资助(2014921048)
