The aerodynamic noise from a high-speed train becomes predominant at sufficiently high train speeds. Pantographs and bogies have been identified as significant aerodynamic noise sources in high-speed trains. The aerodynamic noise generated by pantographs is produced by a vortex shedding process while the aerodynamic noise from bogies is mainly generated by complex circulation of turbulent flow around its components. A semi-empirical component-based method for fast prediction of aerodynamic noise from a high-speed train pantograph is developed on the basis of similar models applied to landing gear noise prediction. Model predictions give good agreement with existing wind tunnel tests showing the approach to be promising. For the bogie, wind tunnel tests have been designed using a 1/10th scale bogie mock up. The results obtained are in agreement with existing data from train pass-by tests, showing that these experimental data can be used for model calibration and validation.
Component-Based Model for Aerodynamic Noise of High-Speed Trains
Notes Numerical Fluid Mech.
Noise and Vibration Mitigation for Rail Transportation Systems ; Kapitel : 56 ; 481-488
2015-01-01
8 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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