燃烧室冷态声场特性分析与试验研究  

Acoustic Mode Simulations and Experiment in the Unworking Combustion Chamber

作　　者：樊晓波[1] 王敏庆[1] 王鹏[1] 

机构地区：[1]西北工业大学航海学院,西安710072

出　　处：《噪声与振动控制》2007年第1期106-108,共3页Noise and Vibration Control

基　　金：国家自然科学基金(10574105);全国优秀博士学位论文基金(200451)

摘　　要：针对常用的圆柱型燃烧室,通过有限元方法进行了声场特性的分析,得到了所关注的第一阶切向共振频率和振型,论文同时探讨了小空间声场的测试方法,并采用设计的测试系统和装置进行了测试,试验结果与分析结果的一致性表明了该有限元模型的正确性以及该试验方法的有效性,也说明该试验方法适用于小空间声场的测试。In this paper, the acoustic characteristic of the unworking cylindrical combustion chamber is simulated by the finite element method （ FEM ）. And this paper describes the techniques of the experiment method of testing the acoustic characteristic by the electret microphone, applied in the testing the acoustic field of small room. The resonant frequencies of the cylindrical combustion chamber gained by FEM, are compared with them gained by the experiment method. In conclusion, The difference of the first resonant tangential frequency is very small. The result indicates the approach is effective and suitable for the test of small sound field.

关 键 词：声学 声模态 有限元 驻极体传声器 

分 类 号：E927[军事—军事装备学] TB115[兵器科学与技术—武器系统与运用工程]