Freight train air brake models. Issue 1 (2nd January 2023)

• Record Type: Journal Article
• Authors: Wu, Qing; Cole, Colin; Spiryagin, Maksym; Chang, Chongyi; Wei, Wei; Ursulyak, Lyudmila; Shvets, Angela; Murtaza, Mirza Ahsan; Mirza , Ikram Murtaza; Zhelieznov, Кostiantyn; Mohammadi, Saeed; Serajian, Hossein; Schick, Bastian; Berg, Mats; Sharma, Rakesh Chandmal; Aboubakr, Ahmed; Sharma, Sunil Kumar; Melzi, Stefano; Di Gialleonardo, Egidio; Bosso, Nicola; Zampieri, Nicolò; Magelli, Matteo; Ion, Crăciun Camil; Routcliffe, Ian; Pudovikov, Oleg; Menaker, Grigory; Mo, Jiliang; Luo, Shihui; Ghafourian, Amin; Serajian, Reza; Santos, Auteliano A.; Teodoro, Ícaro Pavani; Eckert, Jony Javorski; Pugi, Luca; Shabana, Ahmed; Cantone, Luciano;
• Is Part Of: International journal of rail transportation. Volume 11:Issue 1(2023)
• Page Start: 1
• Page End: 49
• Publication Date: 2023-01-02
• Subjects: Air brake -- freight railway -- empirical models -- fluid dynamics -- train dynamics -- brake valves -- brake pipes -- adhesion; Railroads -- Periodicals; Railroads; Periodicals; 385
• DOI: 10.1080/23248378.2021.2006808
• Languages: English
• ISSNs: 2324-8378

Abstract

ABSTRACT: This paper is an outcome of an international collaborative research initiative. Researchers from 24 institutions across 12 countries were invited to discuss the state-of-the-art in railway train air brake modelling with an emphasis on freight trains. Discussed models are classified as empirical, fluid dynamics and fluid-empirical dynamics models. Empirical models are widely used, and advanced versions have been used for train dynamics simulations. Fluid dynamics models are better models to study brake system behaviour but are more complex and slower in computation. Fluid-empirical dynamics models combine fluid dynamics brake pipe models and empirical brake valve models. They are a balance of model fidelity and computational speeds. Depending on research objectives, detailed models of brake rigging, friction blocks and wheel-rail adhesion are also available. To spark new ideas and more research in this field, the challenges and research gaps in air brake modelling are discussed.