Numerical Investigation of Flow-Induced Noise around a High-Speed Train Bogie in a Simplified Cavity
The bogie region has been identified as one of the important aerodynamic noise sources on a high-speed train. In this work, Computational Fluid Dynamics is used to simulate the flow around the bogie and the time-varying surface pressure is used as the input for the far field noise calculation which uses the Ffowcs Williams and Hawkings equation. The Delayed Detached Eddy Simulation method with Spalart-Allmaras turbulence model is used in the simulation of the unsteady flow field. In order to discretize the complex computational region of the bogie model, a hybrid mesh is used. The aerodynamic results show that the rear part of the bogie and its cavity have the strongest noise source intensity. The aeroacoustic results show that the cavity contributes more to the sound pressure level than the bogie does, and the sound energy is concentrated at the low frequencies.
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Supplemental Notes:
- © 2022 American Society of Civil Engineers.
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Corporate Authors:
American Society of Civil Engineers
1801 Alexander Bell Drive
Reston, VA United States 20191-4400 -
Authors:
- He, Yuan
- Thompson, David
- Hu, Zhiwei
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Conference:
- Second International Conference on Rail Transportation
- Location: Chengdu Sichuan Province, China
- Date: 2021-7-5 to 2021-7-6
- Publication Date: 2022-2
Language
- English
Media Info
- Media Type: Web
- Features: References;
- Pagination: pp 65-72
- Monograph Title: ICRT 2021: Second International Conference on Rail Transportation
Subject/Index Terms
- TRT Terms: High speed rail; Noise sources; Railcar trucks; Simulation; Train track dynamics
- Subject Areas: Maintenance and Preservation; Railroads; Vehicles and Equipment;
Filing Info
- Accession Number: 01840795
- Record Type: Publication
- ISBN: 9780784483886
- Files: TRIS, ASCE
- Created Date: Mar 29 2022 9:32AM