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Frontiers of Structural and Civil Engineering

ISSN 2095-2430

ISSN 2095-2449(Online)

CN 10-1023/X

邮发代号 80-968

2019 Impact Factor: 1.68

Frontiers of Structural and Civil Engineering  2018, Vol. 12 Issue (3): 412-424   https://doi.org/10.1007/s11709-017-0432-8
  本期目录
Application of a weakly compressible smoothed particle hydrodynamics multi-phase model to non-cohesive embankment breaching due to flow overtopping
Rasoul MEMARZADEH(), Gholamabbas BARANI, Mahnaz GHAEINI-HESSAROEYEH
Department of Civil Engineering, Faculty of Engineering, Shahid Bahonar University of Kerman, Kerman, Iran
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Abstract

The subject of present study is the application of mesh free Lagrangian two-dimensional non-cohesive sediment transport model applied to a two-phase flow over an initially trapezoidal-shaped sediment embankment. The governing equations of the present model are the Navier-Stocks equations solved using Weakly Compressible Smoothed Particle Hydrodynamics (WCSPH) method. To simulate the movement of sediment particles, the model considers a powerful two-part technique; when the sediment phase has rigid behavior, only the force term due to shear stress in the Navier-Stokes equations is used for simulation of sediment particles’ movement. Otherwise, all the Navier-Stokes force terms are used for transport simulation of sediment particles. In the present model, the interactions between different phases are calculated automatically, even with considerable difference between the density and viscosity of phases. Validation of the model is performed using simulation of available laboratory experiments, and the comparison between computational results and experimental data shows that the model generally predicts well the flow propagation over movable beds, the induced sediment transport and bed changes, and temporal evolution of embankment breaching.

Key wordsWCSPH method    non-cohesive sediment transport    rheological model    two-part technique    two-phase dam break
收稿日期: 2017-01-03      出版日期: 2018-05-22
Corresponding Author(s): Rasoul MEMARZADEH   
 引用本文:   
. [J]. Frontiers of Structural and Civil Engineering, 2018, 12(3): 412-424.
Rasoul MEMARZADEH, Gholamabbas BARANI, Mahnaz GHAEINI-HESSAROEYEH. Application of a weakly compressible smoothed particle hydrodynamics multi-phase model to non-cohesive embankment breaching due to flow overtopping. Front. Struct. Civ. Eng., 2018, 12(3): 412-424.
 链接本文:  
https://academic.hep.com.cn/fsce/CN/10.1007/s11709-017-0432-8
https://academic.hep.com.cn/fsce/CN/Y2018/V12/I3/412
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time (s)approximate average error (%)
dr=0.01 mdr=0.005 mdr=0.0025 m
2.88.315.763.53
5.712.239.266.72
14.115.4211.319.58
Tab.1  
Fig.8  
Fig.9  
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