THE PREDICTION OF AERODYNAMIC AND WHEEL/RAIL NOISE GENERATED BY HIGH-SPEED TRAINS
Wheel/rail interactions and aerodynamic fluctuations are the important sources of wayside noise produced by high-speed railway trains. The dominance of one or the other of these sources depends entirely on the relative effectiveness of each in generating radiated noise. Equations are given for the calculation of both the wheel/rail and aerodynamic noise levels and their predictions are compared to peak noise levels measured during the passage of conventional fast trains, new high-speed trains, and magnetically levitated vehicles. For the quietest new trains built with state-of-the-art technology, the analysis presented indicates that aerodynamic fluctuations can become the dominant source of wayside noise at vehicle speeds between 250 and 300 km/h (155 and 187 mph).
Deutsche Forschungs-u Versuchsanst f Luft-u RaumftInstitut fuer Turbulenzforschung
- KING, W F
- Publication Date: 1977
- Pagination: 34 p.
- TRT Terms: Acoustic measuring instruments; Acoustics; Aerodynamic noise; Aerodynamics; Calculation; Car wheels (Railroads); Environmental impacts; Forecasting; High speed rail; Mathematical models; Measurement; Noise; Noise sources; Rail (Railroads); Railroad transportation; Railroads; Rapid transit; Sound level; Wheels
- Uncontrolled Terms: Computation; Interaction; Noise measurement
- Old TRIS Terms: Acoustic measurement; Aerodynamic effects; Noise threshold
- Subject Areas: Environment; Railroads; Vehicles and Equipment;
- Accession Number: 00185805
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: DLR-IB-257-77/14
- Files: TRIS
- Created Date: Dec 29 1981 12:00AM