Numerical Simulation of the Water Surface Movement with Macroscopic Particles of Dam Break Flow for Various Obstacles

Alibek Issakhov () and Medina Imanberdiyeva
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Alibek Issakhov: al-Farabi Kazakh National University
Medina Imanberdiyeva: al-Farabi Kazakh National University

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2020, vol. 34, issue 9, No 1, 2625-2640

Abstract: Abstract In this paper, the movement of the water surface with macroscopic particles during a dam break flow using the volume of fluid (VOF) methods and the DPM and MPM models were numerically simulated. The numerical simulation is based on the averaged Navier-Stokes equations, and was closed by the LES turbulent model, representing by the incompressible viscous fluid flow, equations for the phase and particle motion. The PISO numerical algorithm was chosen to solve this equation system numerically. The accuracy of the mathematical model and the selected numerical scheme were compared with experimental measurements on the destruction of the dam break problem. In test problem, the values were matched with measurement values and simulation data of other authors, as well as the improved model illustrated values close to the measured values. A matching was also made of the computational data with measured values using different turbulent models. One problem has been considered, the problem is water movement with macroscopic particles, through a heterogeneous terrain and a dam that has a hole. With the help of the problems, it was determined the flooding zones and the time of flooding evacuating people from dangerous areas.

Keywords: Dam break modeling; DPM and MPM models; Macroscopic particle interaction; Flooding zones; PISO algorithm; VOF method (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1007/s11269-019-02382-w

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