Prediction of Turbulent Boundary Layer Induced Noise in the Cabin of a BWB Aircraft
This paper discusses the development of analytical models for the prediction of aircraft cabin noise induced by the external turbulent boundary layer (TBL). While, in previous works, the contribution of an individual panel to the cabin interior noise was considered, here, the simultaneous contributi...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.3233/SAV-2011-0660 |
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| _version_ | 1849684381907550208 |
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| author | Joana Rocha Afzal Suleman Fernando Lau |
| author_facet | Joana Rocha Afzal Suleman Fernando Lau |
| author_sort | Joana Rocha |
| collection | DOAJ |
| description | This paper discusses the development of analytical models for the prediction of aircraft cabin noise induced by the external turbulent boundary layer (TBL). While, in previous works, the contribution of an individual panel to the cabin interior noise was considered, here, the simultaneous contribution of multiple flow-excited panels is analyzed. Analytical predictions are presented for the interior sound pressure level (SPL) at different locations inside the cabin of a Blended Wing Body (BWB) aircraft, for the frequency range 0–1000 Hz. The results show that the number of vibrating panels significantly affects the interior noise levels. It is shown that the average SPL, over the cabin volume, increases with the number of vibrating panels. Additionally, the model is able to predict local SPL values, at specific locations in the cabin, which are also affected with by number of vibrating panels, and are different from the average values. |
| format | Article |
| id | doaj-art-c16e29bbe3a34be4aea2ef8ce17c5397 |
| institution | DOAJ |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-c16e29bbe3a34be4aea2ef8ce17c53972025-08-20T03:23:28ZengWileyShock and Vibration1070-96221875-92032012-01-0119469370510.3233/SAV-2011-0660Prediction of Turbulent Boundary Layer Induced Noise in the Cabin of a BWB AircraftJoana Rocha0Afzal Suleman1Fernando Lau2Department of Mechanical Engineering, University of Victoria, Victoria, BC, CanadaDepartment of Mechanical Engineering, University of Victoria, Victoria, BC, CanadaDepartamento de Engenharia Mecânica (Aeroespacial), Instituto Superior Técnico, Lisboa, PortugalThis paper discusses the development of analytical models for the prediction of aircraft cabin noise induced by the external turbulent boundary layer (TBL). While, in previous works, the contribution of an individual panel to the cabin interior noise was considered, here, the simultaneous contribution of multiple flow-excited panels is analyzed. Analytical predictions are presented for the interior sound pressure level (SPL) at different locations inside the cabin of a Blended Wing Body (BWB) aircraft, for the frequency range 0–1000 Hz. The results show that the number of vibrating panels significantly affects the interior noise levels. It is shown that the average SPL, over the cabin volume, increases with the number of vibrating panels. Additionally, the model is able to predict local SPL values, at specific locations in the cabin, which are also affected with by number of vibrating panels, and are different from the average values.http://dx.doi.org/10.3233/SAV-2011-0660 |
| spellingShingle | Joana Rocha Afzal Suleman Fernando Lau Prediction of Turbulent Boundary Layer Induced Noise in the Cabin of a BWB Aircraft Shock and Vibration |
| title | Prediction of Turbulent Boundary Layer Induced Noise in the Cabin of a BWB Aircraft |
| title_full | Prediction of Turbulent Boundary Layer Induced Noise in the Cabin of a BWB Aircraft |
| title_fullStr | Prediction of Turbulent Boundary Layer Induced Noise in the Cabin of a BWB Aircraft |
| title_full_unstemmed | Prediction of Turbulent Boundary Layer Induced Noise in the Cabin of a BWB Aircraft |
| title_short | Prediction of Turbulent Boundary Layer Induced Noise in the Cabin of a BWB Aircraft |
| title_sort | prediction of turbulent boundary layer induced noise in the cabin of a bwb aircraft |
| url | http://dx.doi.org/10.3233/SAV-2011-0660 |
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