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Numerical Simulation of Submerged Flow Bridge Scour Under Dam-Break Flow Using Multi-Phase SPH Method


Pages: --, Volume 16, Issue 5, 2019

doi:

Abstract: 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.


Keywords: smoothed particle hydrodynamics, multi-phase ?ow model, pressured scour, scour depth, sediment transport
Mathematics Subject Classification:  

Received: July 2004; Revised: August 2004; Published: November 2004.