| 彭临慧,陆建辉,汤渭霖.充水管道声分隔片消声性能研究Ⅰ.理论分析[J].,1999,18(1):15-20 |
| 充水管道声分隔片消声性能研究Ⅰ.理论分析 |
| Study of the muffling behaviou of an acoustical splitter in a water-filled duct Ⅰ. Theoretical Analysis |
| |
| 中文摘要: |
| 本文对在充水管道中加入声分隔片的消声结构的消声性能进行了理论研究，用模式匹配法计 算了有限长度声分隔片的传递损失和功率反射系数．研究结果表明，声分隔片的消声效果优于通常 所采用在管壁加吸声衬层的结构，并且其功率反射系数很小． |
| 英文摘要: |
| An acoustical splitter used for noise reduction in a water-filled channel is theoretically studied. The multisectioned duct theory is generalized to consider the case of splitter of finite length in the duct. And from this theory, the transmission loss and the reflection coefficient of sound power are obtained. It is shown that an improvement of sound attenuation in a duct can be achieved by inserting the splitter compared with the scheme then a sound absorbing rubber is used as an acoustical liner. In addition the power reflection coefficient of the splitters is found to be very small. |
| DOI：10.11684/j.issn.1000-310X.1999.01.005 |
| 中文关键词: 消声 消声器 充水管道 |
| 英文关键词: Noise reduction Silencer Water-filled duct |
| 基金项目: |
|
| 摘要点击次数: 2280 |
| 全文下载次数: 831 |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
