高频振动变体壁面对跨声速抖振影响的数值研究

胡仕林; 康伟; 梁康

doi:10.7527/S1000-6893.2026.33555

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DOI: https://doi.org/10.7527/S1000-6893.2026.33555

高频振动变体壁面对跨声速抖振影响的数值研究

胡仕林 ,
康伟 ,
梁康

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西北工业大学

收稿日期: 2026-03-09

修回日期: 2026-05-21

网络出版日期: 2026-05-25

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Numerical Investigation of High-Frequency Oscillating Morphing Surface Effects on Transonic Buffet

HU Shi-Lin ,
KANG Wei ,
LIANG Kang

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Received date: 2026-03-09

Revised date: 2026-05-21

Online published: 2026-05-25

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摘要

跨声速抖振是一种由激波/边界层干扰诱发的激波振荡现象，会严重影响飞行器气动性能与结构安全。本文采用数值方法研究了高频振动变体壁面对跨声速抖振的控制效果与影响机理，系统计算并分析了三种变体壁面激励形式在1至20倍自然抖振频率范围内对翼型抖振响应特性的影响。结果表明三种激励形式均能有效减小抖振载荷，其中单边凸振动激励在全频段范围内抑制效果最佳，抖振载荷最大能够降低88.49%。每种振动形式均存在一个起始激励频率，当激励频率超过该值时，流场中发生锁频现象，翼表面的激波抖振从低频大振幅运动（非锁频状态）转变为高频小振幅运动（锁频状态），抖振载荷得到大幅度降低（>80%）。流场模态结果进一步表明，锁频与非锁频状态之间的抖振载荷抑制差异源于原始抖振模态与激励模态之间的竞争关系。非锁频状态下原始抖振模态主导流场，抑制效果有限；锁频状态下激励模态占主导，迫使激波运动高频化并实现有效控制。研究表明了高频振动变体壁面在跨声速抖振控制中的应用潜力，为基于振动变体壁面的抖振主动控制提供了理论依据。

关键词： 跨声速抖振; 变体壁面; 高频振动; 抖振抑制; 流场模态

本文引用格式

胡仕林 , 康伟 , 梁康 . 高频振动变体壁面对跨声速抖振影响的数值研究[J]. 航空学报, 0 : 1 -0 . DOI: 10.7527/S1000-6893.2026.33555

Abstract

Transonic buffet is a shock oscillation phenomenon induced by shock wave/boundary layer interaction, which severely compromises aircraft structural safety and aerodynamic performance. This study employs numerical methods to investigate the control efficacy and underlying mechanisms of high-frequency oscillating morphing surfaces on transonic buffet. Systematic computations and analyses are conducted for three morphing surface excitation types across a frequency range of 1–20 times the natural buffet frequency to examine their effects on airfoil buffet response characteristics. The results demonstrate that all three excitation types can effectively suppress buffet loads, with the convex excitation type achieving optimal suppression effect across the entire frequency band, reducing buffet loads by up to 88.49%. Each excitation type exhibits a critical excitation frequency threshold. Beyond this value, frequency lock-in occurs in the flow field, and the shock buffet on the airfoil surface transitions from low-frequency large-amplitude motion (unlock-in state) to high-frequency small-amplitude motion (lock-in state), yielding substantial buffet load reduction (>80%). Modal analysis results further reveal that the transition between lock-in and unlock-in states stems from the competition between the intrinsic buffet mode and the excitation-induced mode. In the unlock-in state, the intrinsic buffet mode dominates the flow field with limited suppression efficacy. In the lock-in state, the excitation-induced mode becomes dominant, compelling the shock motion to shift to higher frequencies and achieving effective control. This study demonstrates the application potential of high-frequency oscillating morphing surfaces for transonic buffet control and provides theoretical foundations for buffet active control strategies based on oscillating morphing surfaces.

Key words： Transonic buffet; Morphing surface; High-frequency oscillating; Buffet suppression; Flow mode

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