航空学报2026，Vol.47Issue(11)：199-212,14.DOI:10.7527/S1000-6893.2025.32682
流固耦合翼型跨声速抖振载荷控制与机理分析
Transonic buffet control and mechanism analysis of an airfoil under fluid-structure interaction
摘要
Abstract
Transonic buffet can induce shock wave oscillations and flow separation,leading to lift fluctuations and in-creased structural dynamic responses,which necessitates load alleviation and response control.Based on small-amplitude skin vibration,this paper designs closed-loop active control laws with time delays to reduce lift fluctuations and structural responses in the plunge and pitch degrees of freedom of an airfoil under fluid-structure interaction.The influence of different control parameters is analyzed from the perspective of flow field evolution,with a focus on com-paring the transonic buffet responses and control effectiveness between the fluid-structure interaction mode and the forced vibration response mode.The results indicate that under the forced vibration mode,the optimal control perfor-mance is achieved with a control law delay time of 0.25 cycles and the skin vibration center located at 0.55 chord length.In this configuration,the suppression of flow separation is most effective,thereby mitigating shock wave mo-tion and achieving a buffet load reduction rate of 94.5%.Under fluid-structure interaction,the transonic buffet load re-duction rate is 91.8%.Compared to the forced vibration mode,the buffet load before control is larger,the buffet re-sponse frequency changes,and flow separation becomes more pronounced.关键词
跨声速抖振/主动控制/流固耦合/载荷减缓/蒙皮振动Key words
transonic buffet/active control/fluid-structure interaction/load alleviation/skin vibration分类
航空航天引用本文复制引用
孟祥一,戴玉婷,张育鸣,黄广靖..流固耦合翼型跨声速抖振载荷控制与机理分析[J].航空学报,2026,47(11):199-212,14.基金项目
国家自然科学基金(U24A2007,12302226) National Natural Science Foundation of China(U24A2007,12302226) （U24A2007,12302226）
