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Study on the Characteristics of Trackside Acoustic Flow Field of High-Speed Train under the Influence of Crosswind

During the on-track acoustic detection process, a potential flow model and an acoustic finite element mathematical model based on synthetic wind are utilized, taking into account the combined effects of vehicle speed, wind direction angle, and crosswind speed. Simulation and modeling are achieved us...

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Detalles Bibliográficos
Autores principales: Zhao, Xing, Zhang, Lei, Li, Lin, Feng, Qiying
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10610962/
https://www.ncbi.nlm.nih.gov/pubmed/37896630
http://dx.doi.org/10.3390/s23208537
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author Zhao, Xing
Zhang, Lei
Li, Lin
Feng, Qiying
author_facet Zhao, Xing
Zhang, Lei
Li, Lin
Feng, Qiying
author_sort Zhao, Xing
collection PubMed
description During the on-track acoustic detection process, a potential flow model and an acoustic finite element mathematical model based on synthetic wind are utilized, taking into account the combined effects of vehicle speed, wind direction angle, and crosswind speed. Simulation and modeling are achieved using Automatic Matching of Acoustic Radiation Boundary Conditions (AML) technology, enabling obtaining a distribution map and sound pressure frequency response curve of the trackside acoustic field under crosswind conditions by setting up field point grids. It is found that sound pressure values at the same location gradually increase as the vehicle speed increases in the frequency range of 10 Hz to 70 Hz, at different vehicle speeds. The sound pressure values and distribution area of the trackside acoustic field are the largest when the crosswind speed is 10 m/s (wind force at level five), allowing for easier location of the sound source when a fault occurs. The study also reveals that under different wind direction angles, the same location’s sound pressure value on the trackside gradually decreases as the wind direction angle increases, to lower than that of the non-crosswind condition, severely hindering the reception and diagnosis of acoustic signals.
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spelling pubmed-106109622023-10-28 Study on the Characteristics of Trackside Acoustic Flow Field of High-Speed Train under the Influence of Crosswind Zhao, Xing Zhang, Lei Li, Lin Feng, Qiying Sensors (Basel) Article During the on-track acoustic detection process, a potential flow model and an acoustic finite element mathematical model based on synthetic wind are utilized, taking into account the combined effects of vehicle speed, wind direction angle, and crosswind speed. Simulation and modeling are achieved using Automatic Matching of Acoustic Radiation Boundary Conditions (AML) technology, enabling obtaining a distribution map and sound pressure frequency response curve of the trackside acoustic field under crosswind conditions by setting up field point grids. It is found that sound pressure values at the same location gradually increase as the vehicle speed increases in the frequency range of 10 Hz to 70 Hz, at different vehicle speeds. The sound pressure values and distribution area of the trackside acoustic field are the largest when the crosswind speed is 10 m/s (wind force at level five), allowing for easier location of the sound source when a fault occurs. The study also reveals that under different wind direction angles, the same location’s sound pressure value on the trackside gradually decreases as the wind direction angle increases, to lower than that of the non-crosswind condition, severely hindering the reception and diagnosis of acoustic signals. MDPI 2023-10-18 /pmc/articles/PMC10610962/ /pubmed/37896630 http://dx.doi.org/10.3390/s23208537 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhao, Xing
Zhang, Lei
Li, Lin
Feng, Qiying
Study on the Characteristics of Trackside Acoustic Flow Field of High-Speed Train under the Influence of Crosswind
title Study on the Characteristics of Trackside Acoustic Flow Field of High-Speed Train under the Influence of Crosswind
title_full Study on the Characteristics of Trackside Acoustic Flow Field of High-Speed Train under the Influence of Crosswind
title_fullStr Study on the Characteristics of Trackside Acoustic Flow Field of High-Speed Train under the Influence of Crosswind
title_full_unstemmed Study on the Characteristics of Trackside Acoustic Flow Field of High-Speed Train under the Influence of Crosswind
title_short Study on the Characteristics of Trackside Acoustic Flow Field of High-Speed Train under the Influence of Crosswind
title_sort study on the characteristics of trackside acoustic flow field of high-speed train under the influence of crosswind
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10610962/
https://www.ncbi.nlm.nih.gov/pubmed/37896630
http://dx.doi.org/10.3390/s23208537
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