The University of Southampton
University of Southampton Institutional Repository

The effect of a moving ground on the flow and aerodynamic noise behaviour of a simplified high-speed train bogie

The effect of a moving ground on the flow and aerodynamic noise behaviour of a simplified high-speed train bogie
The effect of a moving ground on the flow and aerodynamic noise behaviour of a simplified high-speed train bogie
Aeroacoustic sources around the train bogie area are particularly important but involve complex flow. In this study, a numerical investigation is presented of the effect of a moving ground on the flow and aeroacoustic noise behaviour of a train bogie. These make use of the delayed detached-eddy simulation combined with an acoustic analogy for noise prediction. First the flow around an isolated wheelset (1:5 scale) is calculated when it is in proximity to the ground and this is compared with wind-tunnel measurements to verify the simulation. Then the flow and aerodynamic noise behaviour of a simplified high-speed train bogie at scale 1:10 with and without the ground underneath are studied numerically. It is found that a highly turbulent flow is generated within the bogie cavity and the ground increases the noise levels by 6-8 dB due to a combination of acoustic reflection from the ground and modifications to the flow
2324-8378
1-16
Zhu, J.Y.
4fd6be3f-f28d-429c-96ec-f4498f109081
Hu, Z.W.
dd985844-1e6b-44ba-9e1d-fa57c6c88d65
Thompson, D.J.
bca37fd3-d692-4779-b663-5916b01edae5
Zhu, J.Y.
4fd6be3f-f28d-429c-96ec-f4498f109081
Hu, Z.W.
dd985844-1e6b-44ba-9e1d-fa57c6c88d65
Thompson, D.J.
bca37fd3-d692-4779-b663-5916b01edae5

Zhu, J.Y., Hu, Z.W. and Thompson, D.J. (2016) The effect of a moving ground on the flow and aerodynamic noise behaviour of a simplified high-speed train bogie. International Journal of Rail Transportation, 1-16. (doi:10.1080/23248378.2016.1212677).

Record type: Article

Abstract

Aeroacoustic sources around the train bogie area are particularly important but involve complex flow. In this study, a numerical investigation is presented of the effect of a moving ground on the flow and aeroacoustic noise behaviour of a train bogie. These make use of the delayed detached-eddy simulation combined with an acoustic analogy for noise prediction. First the flow around an isolated wheelset (1:5 scale) is calculated when it is in proximity to the ground and this is compared with wind-tunnel measurements to verify the simulation. Then the flow and aerodynamic noise behaviour of a simplified high-speed train bogie at scale 1:10 with and without the ground underneath are studied numerically. It is found that a highly turbulent flow is generated within the bogie cavity and the ground increases the noise levels by 6-8 dB due to a combination of acoustic reflection from the ground and modifications to the flow

Text
__soton.ac.uk_ude_PersonalFiles_Users_ra3n13_mydocuments_EPRINTS_Hu effect of moving ground on the flow.pdf - Accepted Manuscript
Download (1MB)

More information

Accepted/In Press date: 11 July 2016
e-pub ahead of print date: 27 July 2016
Organisations: Aeronautics, Astronautics & Comp. Eng

Identifiers

Local EPrints ID: 398662
URI: https://eprints.soton.ac.uk/id/eprint/398662
ISSN: 2324-8378
PURE UUID: 8dd960bf-b0ab-4d70-973b-1f274dde5a18
ORCID for D.J. Thompson: ORCID iD orcid.org/0000-0002-7964-5906

Catalogue record

Date deposited: 29 Jul 2016 13:30
Last modified: 06 Jun 2018 13:02

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×