New Insights into Railway Vehicle Dynamics

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Transportation and Future Mobility".

Deadline for manuscript submissions: 10 February 2025 | Viewed by 790

Special Issue Editors


E-Mail Website
Guest Editor
Key Laboratory of Traffic Safety on Track, Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha 410075, China
Interests: safety and monitoring technology of high-speed trains operating under strong wind conditions; railway vehicle dynamics; railway vehicle aerodynamics

E-Mail Website
Guest Editor
School of Traffic and Transportation Engineering, Central South University, Changsha 410075, China
Interests: railway vehicle aerodynamics; driving safety of rail vehicles in extreme environments; rail vehicle structural health monitoring and fault diagnosis
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Dipartimento di Meccanica, Politecnico di Milano, Via La Masa 1, 20156 Milano, Italy
Interests: rail vehicle dynamics; rail vehicle active suspension; rail vehicle wheel and rail defects

E-Mail Website
Guest Editor
Group of Dynamics and Vibration, Engineering and Technology Institute Groningen, Faculty of Science and Engineering, University of Groningen, 9713 GZ Groningen, The Netherlands
Interests: rail vehicle vibration and dynamics; rail vehicle structural health monitoring and nondestructive testing; data-driven modelling
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

It is widely acknowledged that developing higher-speed rail transit is important. However, higher-speed, lighter-weight, and lower-axle-load designs will lead to a sharp increase in the aerodynamic loads of the train and the sensitivity of the vehicle system to external disturbances, which will weaken the train's toughness against external disturbances and further increase the risk of operational instability. This adds new challenges to the contradictory regulation between weight reduction–speed increase, energy saving–consumption reduction, and safety–stability operation performance of higher-speed trains, which has become a restriction on the safe, efficient, and green development of higher-speed rail transit. Hence, it is urgent to research new technologies that are suitable for higher-speed trains such as aerodynamics, vehicle dynamics, and safety operation in special weather environments such as strong winds from new perspectives.

Dr. Dongrun Liu
Dr. Tiantian Wang
Dr. Bin Fu
Dr. Liangliang Cheng
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • vehicle aerodynamics
  • vehicle dynamic response for crosswind
  • vehicle vibration and dynamics
  • CFD
  • MBS
  • wind tunnel test
  • full-scale test

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • e-Book format: Special Issues with more than 10 articles can be published as dedicated e-books, ensuring wide and rapid dissemination.

Further information on MDPI's Special Issue polices can be found here.

Published Papers (1 paper)

Order results
Result details
Select all
Export citation of selected articles as:

Research

26 pages, 28194 KiB  
Article
Propagation Characteristics of Initial Compression Wave Induced by 400 km/h High-Speed Trains Passing through Very Long Tunnels
by Kang Wei, Yuangui Mei, Qi Sun and Xiao Hu
Appl. Sci. 2024, 14(13), 5946; https://doi.org/10.3390/app14135946 - 8 Jul 2024
Viewed by 470
Abstract
When high-speed trains enter tunnels, an initial compression wave is generated. As the compression wave propagates at the local speed of sound to the tunnel exit, it radiates into the surrounding environment, forming micro-pressure waves (MPWs). MPWs create sonic booms, resulting in significant [...] Read more.
When high-speed trains enter tunnels, an initial compression wave is generated. As the compression wave propagates at the local speed of sound to the tunnel exit, it radiates into the surrounding environment, forming micro-pressure waves (MPWs). MPWs create sonic booms, resulting in significant environmental issues. The magnitude of the micro-pressure waves is directly proportional to the pressure gradient of the compression wave at the tunnel exit. The nonlinear effects of the initial compression wave during propagation lead to a significant increase in pressure gradient. Therefore, the propagation characteristics of the initial compression wave during the tunnel are the crucial factor affecting the amplitude of MPWs. Based on the one-dimensional compressible unsteady non-isentropic flow model and the improved generalized Riemann variable characteristic method, this paper researched the propagation and evolution characteristics of an initial compression wave generated when 400 km/h high-speed trains enter tunnels with three portal shapes: (no tunnel entrance hood (no hood), an oblique, enlarged tunnel entrance hood (type A), an enlarged equal-section non-uniform opening hole tunnel entrance hood (type B)). The results show that when the initial compression wave propagates inside very long tunnels, the pressure gradient of the compression wave exhibits a trend of initially increasing and then decreasing with the increase in propagation distance. When the pressure gradient of the compression wave reaches its maximum value, the corresponding propagation distance is the steepening critical distance. For no tunnel entrance hoods, type A tunnel entrance hoods, and type B tunnel entrance hoods, the steepening critical distances are 5 km, 6 km, and 16 km, respectively. The steepening critical distance shortens with increasing train speed. Steady friction and unsteady friction effects mainly affect the pressure amplitude and pressure gradient during compression wave propagation, respectively. At lower ambient temperatures, the nonlinear effects in compression wave propagation are significantly enhanced. The mitigation effects of type A tunnel entrance hoods and type B tunnel entrance hoods on pressure gradient reduction are mainly concentrated within 4 km and 12 km, respectively. It is necessary to determine the optimal matching relationship between the tunnel entrance hood and tunnel length based on the characteristics of compression wave propagation to ensure their mitigating performance is maximized. Full article
(This article belongs to the Special Issue New Insights into Railway Vehicle Dynamics)
Show Figures

Figure 1

Back to TopTop