空腔非局域反应声衬传播特性研究  

RESEARCH ON THE SOUND PROPAGATION AND RADIATION IN A DUCT WITH A NON-LOCALLY REACTING LINER

作　　者：杜林[1] 刘宇[1] 孙晓峰[1] 

机构地区：[1]北京航空航天大学407教研室,北京100083

出　　处：《工程热物理学报》2005年第5期751-754,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.50136010)

摘　　要：本文对声波在空腔非局域反应声衬管道内的传播进行了研究。特征方程通过声衬内和管道内两部分声场的耦合求解得到,并采用积分方法对特征方程积分求解,通过模态匹配的方法建立并求解了有限长管道非局域反应声衬的声辐射数值模型,展示了在管道消声主动控制方面的应用潜力。The sound propagation in duct with non-locally reacting liner is discussed in this paper. The eigenvalue equation is obtained through the acoustic coupling between the liner and duct, and then changed into a differential equation, which is solved by a integral method. The sound radiation model of a finite-length duct with non-locally reacting liners has been put forward by mode-matching method. The application potential in active control of duct noise is investigated.

关 键 词：空腔非局域反应声衬 管道声学 主动控制 

分 类 号：TK123[动力工程及工程热物理—工程热物理]