| Autor: |
Bosschaart, C., Eisses A.R., Eerden, F.J.M. van der |
| Jazyk: |
angličtina |
| Rok vydání: |
2012 |
| Předmět: |
|
| Zdroj: |
9th European Conference on Noise Control, EURONOISE 2012, 10-13 June 2012, Prague, Czech Republic |
| Popis: |
Ground noise due to aircraft starting from the Amsterdam airport runway ‘Polderbaan’ has been an issue since its construction in 2003. Take off operation in headwind conditions causes downwind sound propagation towards a residential area situated 2,5 km Southwest of the runway. Due to the large propagation distance, the wind- and ground condition have a significant influence on the sound levels received in the residential area. In a research project commissioned by Schiphol Airport, TNO has proven a principle for ground noise mitigation by using scattering ground sections in the path between the runway and the residential area. The scattering sections prevent the adding of multiple ground reflected sound rays and therefore reduce the received sound level for downwind conditions. The design of the scattering sections has been optimized for attenuation of low frequency noise in the 31.5 Hz octave band. From acoustic research on a scale model in a wind tunnel, a numerical GFPE model of the sound propagation accounting for the wind condition and a full scale validation measurement on scattering sections constructed at the airport, it is demonstrated that the model and measurement results show good agreement. The scattering sections are shown to be a promising measure for airport ground noise. A 10 dB reduction for low frequency noise seems to be achievable with a number of scattering sections with an area that occupies 25% of the total area between runway and the receiver. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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