管道径向高阶声模态控制技术研究  

Research on radial high-order acoustic mode control technology in duct

作　　者：薛东文[1] 高翔[1] 燕群[1] 陈永辉[1] Xue Dongwen;Gao Xiang;Yan Qun;Chen Yonghui(National Key Laboratory of Strength and Structural Integrity,Aircraft Strength Research Institute of China,Xi'an,Shaanxi,710065,China)

机构地区：[1]中国飞机强度研究所强度与结构完整性全国重点实验室,陕西西安710065

出　　处：《飞行器强度研究》2023年第2期47-54,共8页Aircraft Strength Research

摘　　要：针对涡扇发动机风扇噪声源加载的难题,基于多个点声源作用下管道任意一点的声压解,提出管道径向高阶声模态控制方法,含2种基于正问题的方法与1种基于反问题的方法。所开发的方法通过数值仿真和试验测试的验证,3种方法均可控制径向高阶声模态。相对而言,由于基于反问题的方法考虑系统误差,控制精度高.声模态分辨率达10dB.可实现周向声模态和径向声模态的同时控制,系统调试工作量小,可推广使用。In order to solve the problem of loading noise source that as the fan noise of turbofan engine.a radial high-order acoustic mode control methods for the duct were proposed in this paper.These methods originated from the sound pressure solution of any point in the duct under the action of multiple point sound sources.Control methods of positive and negative problem were introduced.The developed methods have been validated by numerical simulation and experiments.All three methods have the ability to control the high-order radial modes.Relatively.the control accuracy is high for the method based on the inverse method because of the considering of system error.The control accuracy reaches 1odB.It can achieve simultaneous control of the circumferential and the radial acoustic modes.and the system debugging workload is small.The method based on inverseproblem is worthfor promoting.

关 键 词：管道噪声 径向声模态 噪声控制 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]