| 流管侧向微缝共振器的声学特性 |
| |
| 引用本文： | 戴习文,景晓东,孙晓峰.流管侧向微缝共振器的声学特性[J].航空动力学报,2011,26(6):1231-1236. |
| |
| 作者姓名： | 戴习文 景晓东 孙晓峰 |
| |
| 作者单位： | 北京航空航天大学能源与动力工程学院,北京,100191 |
| |
| 基金项目： | 国家自然科学基金(50890181,51076005); 航空基金(2009ZB51) |
| |
| 摘 要： | 为研究有流动管道侧向微缝共振器的声学特性,基于离散涡方法建立了一个理论模型.管道安装共振器处利用质量和动量守恒建立间断条件,再结合离散涡模型,计算出共振器的声阻抗和吸声系数.数值模拟表明微缝处流场主要取决于脱落涡层的卷起和拍动,这与流场显示实验结果一致,并验证了半经验模型中微缝剪切层的"盖子"假设.结果还表明共振器声阻...
|
| 关 键 词： | 微缝共振器 声衬 切向流 涡声相互作用 离散涡方法 |
| 收稿时间： | 2010/11/10 0:00:00 |
| 修稿时间： | 2011/5/13 0:00:00 |
Acoustic properties of a slit resonator attached to a pipe with flow |
| |
| DAI Xi-wen,JING Xiao-dong and SUN Xiao-feng.Acoustic properties of a slit resonator attached to a pipe with flow[J].Journal of Aerospace Power,2011,26(6):1231-1236. |
| |
| Authors: | DAI Xi-wen JING Xiao-dong and SUN Xiao-feng |
| |
| Institution: | DAI Xi-wen,JING Xiao-dong,SUN Xiao-feng(School of Jet Propulsion,Beijing University of Aeronautics and Astronautics,Beijing 100191,China) |
| |
| Abstract: | To investigate the acoustic properties of a slit resonator attached to a pipe with flow,a theoretical model based on the discrete vortex method was set up.The discontinuity conditions at the joint between the pipe and the resonator were formulated using the mass and momentum conservations,then combined with a discrete vortex model the acoustic impedance and the absorption coefficient of the resonator were computed.The numerical simulation indicates that the flow field around the slit is dominated by the rol... |
| |
| Keywords: | slit resonator acoustic liner grazing flow vortex/sound interaction discrete vortex method |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《航空动力学报》浏览原始摘要信息 |
| 点击此处可从《航空动力学报》下载免费的PDF全文 |
