Article
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Modelling Time–Dependent Flow through Railway Ballast
Version 1
: Received: 8 March 2023 / Approved: 9 March 2023 / Online: 9 March 2023 (03:31:03 CET)
A peer-reviewed article of this Preprint also exists.
Alrdadi, R.; Meylan, M.H. Modelling Time-Dependent Flow through Railway Ballast. Fluids 2023, 8, 170. Alrdadi, R.; Meylan, M.H. Modelling Time-Dependent Flow through Railway Ballast. Fluids 2023, 8, 170.
Abstract
In this study, a numerical simulation of fluid flow through railway ballast in the time domain is presented, providing a model for unsteady-state flow. It is demonstrated that the position of the free surface with respect to time can also be used to solve the steady flow case. The effect of ballast fouling is included in the model to capture the realistic behavior of railway ballast, which is critical to understanding the impact of flooding. A thorough comparison with a range of previous studies, including theoretical and experimental approaches, is made and very close agreement is obtained. The significant impact of ballast fouling on fluid flow and its potential consequences for railway infrastructure are highlighted by the simulation. Valuable insights into the behavior of water flow through porous media and its relevance to railway ballast management are offered by this study.
Keywords
free surface; steady state; unsteady state; railway ballast; fouling ratio; specific yield; finite element method
Subject
Engineering, Civil Engineering
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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