Simulations for dry granular flows behavior and open check dam properties

Abstract

This article presents a simulation of the flow of dry granules in a flume to study the flow behavior of dry granules when passing through an open check dam. The simulation was carried out using the Discrete element method (DEM) to study the flow behavior of polyhedral granules. The contact dynamics method (CD) is required. The important variables to be studied were the pattern and internal angles of open check dams. The flow slope was determined at 30 degrees, and the spacing of each pile was 1.22d95. In conclusion Alpha-shaped open check dams have reduced impact force and better trapping efficiency than V-shaped open check dams. The trapping efficiency of these two open check dam patterns differs clearly from each of the internal angles of the open check dams more than impact force reduction. Consequently, all the open check dams studied in impact force reduction were insignificant to the efficiency of the open check dams when the internal angle changed in the range of 60 to 100 degrees, but the trapping efficiency indicates the open check dam’s effectiveness when different pattern and internal angles of the open check dam.