Modern Challenges Facing Turbomachinery Aeroacoustics
In this review we describe current scientific and technological issues in the quest to reduce aeroengine noise, in the face of predicted rapid increases in the volume of air traffic, on the one hand, and increasingly strict environmental regulation, on the other. Alongside conventional ducted turbof...
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| Veröffentlicht in: | Annual review of fluid mechanics 2012-01, Vol.44 (1), p.227-248 |
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| creator | Peake, Nigel Parry, Anthony B |
| description | In this review we describe current scientific and technological issues in the quest to reduce aeroengine noise, in the face of predicted rapid increases in the volume of air traffic, on the one hand, and increasingly strict environmental regulation, on the other. Alongside conventional ducted turbofan designs, new open-rotor contra-rotating power plants are currently under development, which present their own noise challenges. The key sources of tonal and broadband noise, and the way in which noise propagates away from the source, are surveyed in both cases. We also consider in detail two key aspects underpinning the flow physics that continue to receive considerable attention, namely the acoustics of swirling flow and unsteady flow-blade interactions. Finally, we describe possible innovations in open-rotor engine design for low noise. |
| doi_str_mv | 10.1146/annurev-fluid-120710-101231 |
| format | Article |
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| ispartof | Annual review of fluid mechanics, 2012-01, Vol.44 (1), p.227-248 |
| issn | 0066-4189 1545-4479 |
| language | eng |
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| source | Annual Reviews |
| subjects | Aerospace engines Broadband Electric power generation Engine design Fluid mechanics Noise open rotor propeller turbofan Turbomachinery Unsteady |
| title | Modern Challenges Facing Turbomachinery Aeroacoustics |
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