Assessment of the Influence of a Multilevel Protective Column on the Spread of Mud-stone Admixture During a Dam Break

Alibek Issakhov (), Aliya Borsykbaev and Aizhan Abylkassymova ()
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Alibek Issakhov: Al-Farabi Kazakh National University
Aliya Borsykbaev: Al-Farabi Kazakh National University
Aizhan Abylkassymova: Kazakh British Technical University

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2025, vol. 39, issue 2, No 3, 603-623

Abstract: Abstract The present study considers the behavior of a complex water-mudstone volume of a mudflow in a configuration with an arcuate lateral curvature. The system of 3D Reynolds-averaged Navier–Stokes equations was closed-loop in combination with the k-eps turbulent model. The volume of fluid (VOF) method was used to perform numerical simulations. For the correct description of the water flow and sedimentary flow, a modification of the mathematical model was carried out. Thus, the Newtonian model was used to describe the water flow, while the non-Newtonian model was used to describe the sedimentary layer. The modified model was validated using a test problem that had experimental and numerical data. The obtained results showed that the use of a multi-level protective column had a positive effect. So it can be seen that the movement of water at the initial moment occurs in a more accelerated form, while after a certain time the velocity value drops noticeably, which leads to the braking of the mixture downstream, which in the future can give an advantage for emergency evacuation of people. So, by the end of the channel, the difference reaches up to 2.5 s compared to without a number of protective cylindrical columns.

Keywords: Dam Break Modeling; Multilevel Protective Column; Mud-stone Admixture; DPM and MPM Models; Flood Zones (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1007/s11269-024-04010-8

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