An Experimental Study of the Acoustic Oscillations by Flows Over CavitiesSource: Journal of Vibration and Acoustics:;2004:;volume( 126 ):;issue: 002::page 190Author:Xavier Amandolèse
,
Research Engineer
,
Pascal Hémon
,
Research Engineer
,
Clotilde Regardin
,
Research Engineer
DOI: 10.1115/1.1688761Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: We present an experimental study of acoustic oscillations induced by an internal airflow over a shallow and a deep cavity. The Kelvin-Helmholtz instability is interacting with an acoustic mode of the cavity or of the duct, leading to a resonance which produces a very high sound level. The influence of upstream boundary layer thickness and neck thickness is studied. Some results obtained by modifying the upstream lip shape, by crenel addition, are also given.
keyword(s): Oscillations , Acoustics , Cavities , Resonance , Thickness AND Shear (Mechanics) ,
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| contributor author | Xavier Amandolèse | |
| contributor author | Research Engineer | |
| contributor author | Pascal Hémon | |
| contributor author | Research Engineer | |
| contributor author | Clotilde Regardin | |
| contributor author | Research Engineer | |
| date accessioned | 2017-05-09T00:14:47Z | |
| date available | 2017-05-09T00:14:47Z | |
| date copyright | April, 2004 | |
| date issued | 2004 | |
| identifier issn | 1048-9002 | |
| identifier other | JVACEK-28869#190_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/131064 | |
| description abstract | We present an experimental study of acoustic oscillations induced by an internal airflow over a shallow and a deep cavity. The Kelvin-Helmholtz instability is interacting with an acoustic mode of the cavity or of the duct, leading to a resonance which produces a very high sound level. The influence of upstream boundary layer thickness and neck thickness is studied. Some results obtained by modifying the upstream lip shape, by crenel addition, are also given. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | An Experimental Study of the Acoustic Oscillations by Flows Over Cavities | |
| type | Journal Paper | |
| journal volume | 126 | |
| journal issue | 2 | |
| journal title | Journal of Vibration and Acoustics | |
| identifier doi | 10.1115/1.1688761 | |
| journal fristpage | 190 | |
| journal lastpage | 195 | |
| identifier eissn | 1528-8927 | |
| keywords | Oscillations | |
| keywords | Acoustics | |
| keywords | Cavities | |
| keywords | Resonance | |
| keywords | Thickness AND Shear (Mechanics) | |
| tree | Journal of Vibration and Acoustics:;2004:;volume( 126 ):;issue: 002 | |
| contenttype | Fulltext |