Numerical simulation of submerged flow bridge scour under dam-break flow using multi-phase SPH method
Author(s) -
H. T. Nguyen,
Tu Anh,
Benoît Cosson
Publication year - 2019
Publication title -
mathematical biosciences and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.451
H-Index - 45
eISSN - 1551-0018
pISSN - 1547-1063
DOI - 10.3934/mbe.2019269
Subject(s) - smoothed particle hydrodynamics , geotechnical engineering , flow (mathematics) , sediment transport , geology , mechanics , bridge (graph theory) , newtonian fluid , sediment , engineering , physics , geomorphology , medicine
This paper presents a coupled two-phase ow model for simulation of submerged flow bridge scour under dam-break flows considering the sediment-uid interaction. The Smoothed Particle Hydrodynamics (SPH) method is employed to simulate the sediment and uid movements based on the Newtonian and non-Newtonian uids, respectively, in the framework of two-phase ow modeling. The SPH simulation based on the treatment of Bingham-type Herschel-Bulkley-Papanastasiou constitutive model and the Drucker-Prager yield criterion is used to predict the sediment transport and the scour depth time histories under a submerged bridge deck. The influence of parameters such as geometry of the bridge deck and flow conditions on the scour depth is also investigated.
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