摘要
针对民机在着陆构型下增升装置打开时出现的升力系数迟滞现象,运用嵌套网格技术对给定模型进行网格划分并进行定常、非定常数值模拟,分析迟滞情况。结合增升装置打开时间短,迟滞量尽可能小的优化方向,运用遗传优化算法进行计算。增升装置最优打开方案与通过拉丁超立方抽样法生成的初始样本相比,升力系数迟滞量明显减小,气动特性有较大改善。
Aiming at the hysteresis of lift coefficient when the high-lift device is opened in the landing configuration of civil aircraft,the overset grids technique is used to mesh the given model and then simulating the steady and unsteady values to analyze the hysteresis.Combining with the optimization direction of short opening time and minimal hysteresis effect,the genetic algorithm is used to optimize the opening mode.Compared with the initial sample randomly generated by Latin Hypercube,the hysteresis of lift coefficient is significantly reduced and the aerodynamic characteristics are greatly improved.
作者
王壮壮
张毅
孙刚
毛俊
WANG Zhuang-zhuang;ZHANG Yi;SUN Gang;MAO Jun(Department of Aeronautics and Astronautics,Fudan University,Shanghai 200433,China;Shanghai Aircraft Design and Research Institute,Shanghai 200436,China)
出处
《航空计算技术》
2020年第4期66-70,共5页
Aeronautical Computing Technique
关键词
增升装置
嵌套网格
非定常流动
气动迟滞效应
遗传算法
high-lift device
overset grids
unsteady flow
aerodynamic hysteresis effect
genetic algorithm
