Abstract
The present study investigated the dam break flow containing the multiphase of the liquid-gas-particles. To investigate the effect of liquid density, four different liquid densities is considered 1000, 1500, 2000 and 2400kg/m³. The density ratio of the particle to the liquid is defined as DR. Thus, the liquid densities correpond to the values of 1.04, 1.25, 1.67 and 2.5. for DR. The open source codes, OpenFOAM and CFDEMproject, were used to numerically simulate the complex multiphase flow. These codes for this problem has been successfully validated in authors’s recent paper of Park et al.[16]. Regardless of DR, the front head of the particles approaches earlier than that of the liquid to the opposite wall. The difference of the arrival time between the front heads of the particles and the liquid becomes smaller with increasing DR. The time evolution of the free surface and the particles apparently explain the dependence of the front head positions of the liquid and particles on DR.
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