摘要
在对气动阀门发声器的工作过程进行描述基础上,通过理论分析和数值计算与实验相结合的方法,分析了气动阀门发声器的内部流场和外部声场的特征.得出了在气室压力比大于1.89时,低频声波也是占主要成份的结论.
The characteristics of the inner flow field and outer sound field of a pneumatic valve sound generator is analyzed with its theoretical model, numerical simulation and experimental results. It is found that low frequency sound wave plays the chief role also when the air pressure in chamber is higher than the ambient. The working process of the valve is simulated with the commercial software.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2006年第8期677-680,共4页
Transactions of Beijing Institute of Technology
基金
国家部委预研项目(41326050105)
关键词
气动阀门
气动特性
发声器
数值仿真
pneumatic valve
aerodynamic characteristics
sound generator
numerical simulation
