ON THE PREDICTION OF WAYSIDE NOISE LEVELS FOR HIGH-SPEED RAILWAY VEHICLES
The relative contributions of aerodynamic and wheel/rail noise to railway wayside noise levels are not well understood. Methods for predicting these contributions discussed in this paper include an equation for turbulent boundary layer noise (the minimum wayside noise), an empirical formula for total aerodynamic noise based on airframe noise studies, and the Peters equation for wheel/rail interaction noise. Comparisons are made between predicted and measured noise levels for a buoyant vehicle, the Linear Induction Motor Research Vehicle (LIMRV), and a magnetically levitated vehicle. Analysis of these results indicates that aerodynamic fluctuations could become the dominant source of wayside noise at train speeds of 240-280 km/h. This prognosis is for new high-speed railway vehicles equipped with disk brakes and other innovations that reduce the wheel/rail noise contribution.
Deutsche Forschangs-u Versuchsanst f Luft-u RaumftInstitut fuer Turbulenzforschung
- King III, W F
- Publication Date: 1976
- Pagination: 45 p.
- TRT Terms: Aerodynamic noise; Aerodynamics; Air cushion vehicles; Boundary layer; Car wheels (Railroads); Forecasting; High speed rail; Linear induction motors; Magnetic levitation; Magnetic levitation vehicles; Mathematical models; Measurement; Noise; Railroad facilities; Railroad transportation; Railroads; Turbulence; Turbulent boundary layer
- Uncontrolled Terms: Noise measurement
- Old TRIS Terms: Aerodynamic effects; Wayside
- Subject Areas: Environment; Public Transportation; Railroads;
- Accession Number: 00169595
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: DLR-IB-257-77/6
- Files: TRIS
- Created Date: Mar 14 1978 12:00AM