机构

• 力学研究所 [1]
• 长春光学精密机械与物... [1]
• 工程热物理研究所 [1]

采集方式

• OAI收割 [3]

内容类型

• 会议论文 [2]
• 期刊论文 [1]

发表日期

• 2016 [1]
• 2006 [1]
• 2004 [1]

学科主题

筛选

浏览/检索结果: 共3条，第1-3条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序作者升序作者降序 An investigation of the aerodynamic noise of long-grouped high speed trains 会议论文  OAI收割 Cagliari, Sardinia, Italy , 5-8 April 2016 作者:  Sun ZX(孙振旭);  Yang GW(杨国伟);  Guo DL(郭迪龙)   |  收藏  |  浏览/下载：39/0  |  提交时间：2018/11/08 Acoustic noise  Acoustic variables measurement  Acoustic wave transmission  Aerodynamics  Architectural acoustics  Computational aeroacoustics  Numerical models  Railroad transportation  Railroads  Speed  Turbulence  Vehicles  Aerodynamic noise  High speed train (HST)  Non  linear acoustics  Sound power  Sound pressure level   Research on the close noise field of the piezoelectric pump (EI CONFERENCE) 会议论文  OAI收割 2006 IEEE International Conference on Mechatronics and Automation, ICMA 2006, June 25, 2006 - June 28, 2006, Luoyang, China Jizhuang L.; Jianhui Z.; Shouyin W.; Qixiao X.; Desheng L. 收藏  |  浏览/下载：60/0  |  提交时间：2013/03/25 Restraining the noise  meanwhile  improving the dynamic characteristics of the driving power of piezoelectric pump effectively are the final purposes of doing research on the reciprocating and flexural vibration of the piezoelectric vibrator. However  among many papers regarding piezoelectric pump  there are very few papers about the research on the noise of piezoelectric pump. This is far less than the research on the application of the piezoelectric pump in other fields. In this paper  the research on the flexural vibration deformation and vibration radiation noise of the piezoelectric vibrator are carried out. Firstly  the vibration equations of the piezoelectric vibrator are built and flexural vibration deformation function is deduced. Then  the simplified vibration model of the piezoelectric vibrator is introduced by using vibration theories of micro-area piston. Furthermore  theoretical calculation equations of sound pressure in close noise field and noise contribution equation of fluid in pump are deduced. Finally  a comparison is made between the theoretical calculation value and experimental value  and the contribution quantities of the piezoelectric vibrator and fluid in pump are obtained respectively under different frequencies. The consequence approves that the theory introduced by this research is true. 2006 IEEE.   Relation between the Three-dimensional Flow Structure and Aerodynamic Sound Generated from Inclined Circular Cylinder 期刊论文  OAI收割 JOURNAL OF THERMAL SCIENCE, 2004, 卷号: 13, 期号: 2, 页码: 127,132 Mitsuru SHINGAI1; Yasutake HARAMOT02; Kazuyoshi MATSUZAK 收藏  |  浏览/下载：18/0  |  提交时间：2013/03/11 aerodynamic sound  correlation length  coherent output power  Strouhal number  flow visualization