Study of Two-Fluid Model of Falling Rocks

A two-fluid mathematical model (TFM) based on the continuum approach and the kinetic theory of granular gas (KTGG) was studied to describe the motion of falling rocks mass flow down a slope. The results of three-dimensional modeling of the flow of the falling mass consisting of rock granules (diameter 7.5 cm) down the slope (the slope angle varied from 20 degrees to 60 degrees) were obtained. The obtained calculations of the maximum height of the flow layer and the average flow velocity were compared with the calculated data using the discrete element method (DEM). The calculation results obtained using the TFM better describe the calculated data in the case when the average flow velocity in the dependence of the slope angle is studied. The additional research of the maximum height of the flow layer in the dependence of the slope configuration is necessary.