超声速内流道激波串诱导噪声与结构作用规律研究  

Study on the effect of noise and structure induced by shock wave string in supersonic inner channel

作　　者：严春晖 杨党国[1,2] 王显圣[1,2] 董宾[1,2] 宁荣辉 Yan Chunhui;Yang Dangguo;Wang Xiansheng;Dong Bin;Ning Ronghui(High Speed Aerodynamics Institute,China Aerodynamics Research and Development Center,Mianyang 621000,China;State Key Laboratory of Aerodynamics,China Aerodynamics Research and Development Center,Mianyang 621000,China)

机构地区：[1]中国空气动力研究与发展中心高速空气动力研究所,绵阳621000 [2]中国空气动力研究与发展中心空气动力学国家重点实验室,绵阳621000

出　　处：《空天技术》2023年第2期10-19,共10页Aerospace Technology

摘　　要：吸气式超声速飞行器进气道/隔离段在高反压状态下,内部气流的非定常运动会形成严酷脉动压力环境,造成飞行器结构疲劳破坏。针对飞行器结构设计中气动噪声与结构振动相互作用问题,通过高速风洞试验开展了典型结构参数的超声速内流道声振响应特性研究,分析了内流道中高强噪声与结构振动响应间的影响规律。结果表明,超声速内流诱导声振耦合问题中的噪声载荷主要由非定常流动引起,并受到流场中复杂激波运动的影响。超声速内流道模型流动/振动/噪声多物理场耦合特性的试验研究,为厘清发动机内流道复杂流场结构、高强噪声与结构振动影响规律提供了技术支持。Under the condition of high back pressure,the unsteady motion of the internal shock wave series in the inlet/isolation section of the aspirating supersonic aircraft forms a harsh pulsating pressure environment,which leads to the fatigue failure of the aircraft structure.Aiming at the interaction between aerodynamic noise and structural vibration in aircraft structure design,the supersonic internal flow channel response characteristics of typical structural parameters are studied by high-speed wind tunnel tests.The interaction law between high-intensity noise and structural vibration response in internal flow channel is also analyzed.The results show that the noise load in vibro-acoustic coupling problems induced by the supersonic internal flow is mainly caused by unsteady flows and affected by complex shock waves in the flow field.The experimental study of multi-physical field coupling characteristics of flow/vibration/noise in supersonic internal flow channel model,provides technical support for clarifying the complex flow field structure of engine internal flow channel and the influence law of high intensity noise and structural vibration.

关 键 词：超声速内流 气动噪声 脉动压力 声振响应 风洞试验 

分 类 号：V211.73[航空宇航科学与技术—航空宇航推进理论与工程]