[an error occurred while processing this directive] [an error occurred while processing this directive]
[an error occurred while processing this directive]|
尹李筱(2002—), 男, 硕士研究生。E-mail: initial0214@126.com |
收稿日期: 2025-02-14
网络出版日期: 2025-05-15
Coupling Mechanism and Control Methods of Transonic Shock Oscillation and Cavity Flow
Received date: 2025-02-14
Online published: 2025-05-15
跨声速激波振荡与空腔流动均是可侧向机动火箭导弹强脉动压力及结构振动的主要诱因。然而, 现有研究多集中于讨论单一流动特征对壁面载荷环境的影响, 并未关注两种非定常流动现象的耦合作用, 为特定条件下飞行器的安全埋下一定的隐患。文中以典型火箭整流罩及侧壁空腔结构为研究对象, 采用延迟分离涡模拟(delayed detached eddy simulation, DDES)方法对跨声速激波振荡与空腔流动同时存在工况下的流场特征和脉动压力时频特性开展数值研究, 探讨激波振荡与空腔流动的耦合作用机理。研究结果表明:空腔流动减少了分离流对激波的作用从而减弱跨声速激波振荡的强度, 而激波振荡使得空腔流场趋于稳定, 显著降低了空腔壁面声压级(sound pressure level, SPL), 0.95Ma工况下最多可达30 dB。基于对跨声速耦合流场流动规律的认知, 设计了耦合流场的3种流动控制方案。对比结果发现:空腔前缘斜坡有利于促进激波振荡与空腔流动的相互抑制作用, 进而降低空腔壁面脉动压力水平。跨声速激波振荡与空腔流动耦合流场分析可为新一代飞行器研制提供一定支撑作用。
尹李筱 , 赵小见 . 跨声速激波振荡与空腔流动耦合机理及控制方法研究[J]. 弹箭与制导学报, 2025 , 45(2) : 241 -250 . DOI: 10.15892/j.cnki.djzdxb.2025.02.015
Transonic shock oscillations and cavity flows are both primary contributors to the intense pulsating pressures and structural vibrations in laterally maneuverable rocket missiles. However, existing studies have predominantly focused on single flow characteristics impacting on the wall load environment, while neglecting the coupling effects between two unsteady flow phenomena. This oversight poses potential risks to the flight safety of aerospace vehicles under specific flight conditions. In this study, a rocket fairing and a sidewall cavity structure are employed as the research subjects. The Delayed Detached Eddy Simulation (DDES) method is utilized to conduct a numerical investigation into the flow field characteristics and the time-frequency properties of pulsating pressures in the presence of both transonic shock oscillations and cavity flows, aiming to explore the coupling mechanisms between shock oscillations and cavity flows. The research findings indicate that cavity flows reduce the effect of separated flows on the shock, thereby weakening the intensity of transonic shock oscillations, while shock oscillations stabilize the cavity flow field, significantly lowering the sound pressure level (SPL) on the cavity walls, maximally, which can reach up to 30 dB at Mach 0.95. Based on the flow dynamics cognition in coupled transonic flow fields, 3 flow control strategies for the coupled flow field are designed. Comparative results reveal that a steep rise in leading edge of the cavity promotes the mutual inhibition of shock oscillations and cavity flows, thereby reducing the pulsating pressure levels on the cavity walls. The analysis of the coupled flow field involving transonic shock oscillations and cavity flows provides valuable support for the development of next-generation aerospace vehicles.
Key words: transonic flow; shock oscillation; cavity flow; pressure fluctuations; flow control
| [1] |
邢成龙, 乐贵高, 沈林, 等. 导流槽构型对火箭起飞时流场和声场的影响[J]. 航空动力学报, 2020, 35(3):589-596.
|
| [2] |
|
| [3] |
|
| [4] |
|
| [5] |
|
| [6] |
|
| [7] |
张伟伟, 高传强, 叶正寅. 机翼跨声速抖振研究进展[J]. 航空学报, 2015, 36(4): 1056-1075.
|
| [8] |
高传强, 张伟伟. 机翼跨声速抖振数值模拟及模态分析[J]. 航空学报, 2019, 40 (7): 19-33.
|
| [9] |
赵瑞, 荣吉利, 任方, 等. 火箭整流罩外气动噪声环境的大涡模拟研究[J]. 宇航学报, 2015, 36 (9): 988-994.
|
| [10] |
贾居红, 胡丽杰. 锥柱裙组合体再入气动热特性研究[J]. 弹箭与制导学报, 2019, 39(3): 107-110.
|
| [11] |
李凰立, 苏虹, 沈丹, 等. 飞行器脉动压力的CAA方法研究[J]. 强度与环境, 2019, 46(2): 13-20.
|
| [12] |
王英诚, 杨浩亮, 史晓宁, 等. 运载火箭主动上升段跨声速抖振问题[J]. 现代应用物理, 2023, 14(2): 208-215.
|
| [13] |
张斯澄, 吕本帅, 刘振皓, 等. 跨声速流动激波边界层干扰分离流动特征研究[J]. 强度与环境, 2023, 50(1):31-37.
|
| [14] |
童福林, 唐志共, 李新亮, 等. 压缩拐角激波与旁路转捩边界层干扰数值研究[J]. 航空学报, 2016, 37(12): 3588-3604.
|
| [15] |
童福林, 段俊亦, 周桂宇, 等. 激波/湍流边界层干扰压力脉动特性数值研究[J]. 力学学报, 2021, 53(7): 1829-1841.
|
| [16] |
|
| [17] |
|
| [18] |
杨党国, 范召林, 罗新福, 等. 跨超声速空腔静态流动特性数值及试验研究[C]// 四川省力学学会. 四川省力学学会2008年学术大会论文集. 成都: 四川大学学报(工程科学版)编辑部, 2008: 206-209.
|
| [19] |
王显圣, 周方奇, 徐来武, 等. 内埋弹舱流动/振动/噪声多场载荷实验[J]. 空气动力学学报, 2022, 40(3): 160-168.
|
| [20] |
王显圣, 杨党国, 刘俊, 等. 弹性空腔流致噪声/结构振动特性试验[J]. 航空学报, 2017, 38(7): 182-191.
|
| [21] |
|
| [22] |
|
| [23] |
马丽璇, 李恩义, 孙书霞, 等. 跨声速空腔声学特性数值模拟[J]. 中国民航大学学报, 2020, 38(5): 10-16.
|
| [24] |
|
| [25] |
|
| [26] |
刘俊, 蔡晋生, 杨党国, 等. 超声速空腔流动波系演化及噪声控制研究进展[J]. 航空学报, 2018, 39(11):18-36.
|
| [27] |
刘俊, 蔡晋生, 周方奇. 空腔噪声的马赫数敏感性研究[J]. 实验流体力学, 2020, 34(3): 104-110.
|
| [28] |
刘俊, 罗新福, 王显圣. 前缘形状对空腔模型气动特性影响试验[J]. 航空学报, 2022, 43(7): 78-88.
|
| [29] |
|
| [30] |
|
| [31] |
宁舜山, 张倩, 肖伟, 等. 形状变化对空腔噪声的抑制效果[J]. 振动与冲击, 2021, 40(22): 209-215.
|
| [32] |
马瑞轩, 李征初, 宋玉宝, 等. 基于传声器阵列的低速空腔噪声控制试验研究[J]. 振动与冲击, 2022, 41 (5): 267-272.
|
| [33] |
|
/
| 〈 |
|
〉 |