摘要
通过实验探索了蒸汽在水下有限空间内喷注时喷注噪声的辐射规律 ,发现噪声声压级和频谱同水温有着直接的关系。在此基础上 ,本文进行了降噪实验 ,发现导流筒对降噪效果显著 ,同时发现临界流量对噪声的影响明显 ,在达到临界流量时 。
The noise emission behavior of a steam jet in an underwater finite space has been investigated through a series of tests. It has been discovered that the sound pressure level and frequency spectrum is directly related to water temperature. On this basis the authors have conducted noise reduction tests and found that a flow guide cylindrical body plays a significant role in noise reduction. In the meantime, it was also discovered that a critical flux exercises a considerable influence on noise level. On reaching this critical flux there occurs a significant decrease in the sound pressure level of the jet noise.
出处
《热能动力工程》
EI
CAS
CSCD
北大核心
2000年第6期627-629,636,共4页
Journal of Engineering for Thermal Energy and Power
基金
原机械部教育司科技基金资助项目(98250721)
关键词
喷注噪声
声压级
过冷度
导流筒
jet noise
noise level
subcooling degree
flow guide cylindrical body
