摘要
对低速轴流风机尾涡宽频噪声的计算模型进行研究,提出了叶片尾涡脱落噪声声功率与掠向角余弦值的五次方成正比的结论,基于高斯分布函数建立尾涡宽频脱落噪声频谱的计算方法,并对以上结论和计算方法进行了实验验证。
The model to calculate the blade tail edge vortex shedding broadband noise of low speed axial flow fan is studied, Conclusion is got that sound power of the tail edge vortex noise is direct proportion to the quintuple of the cosine value of the blade edge sweep angle， A model based on the gauss distributing formula is put forward which is suitable for spectrum calculation， Experiments are done for validation and good fitness is observed。
出处
《噪声与振动控制》
CSCD
北大核心
2005年第4期58-60,共3页
Noise and Vibration Control
关键词
声学
轴流叶轮
紊流
宽频噪声
acoustics
axial flow fan
turbulence flow
broadband noise
