Following previous designs such as plate targets, rod targets, rotating targets and liquid metal targets, the gravity-driven dense granular-flow target (DGT), which combines the advantages of solid and liquid metal ta...Following previous designs such as plate targets, rod targets, rotating targets and liquid metal targets, the gravity-driven dense granular-flow target (DGT), which combines the advantages of solid and liquid metal targets,becomes a new attractive choice[1]. The geometry of DGT consists of a cylindrical hopper and an internal coaxial cylindrical beam pipe as shown in Fig. 1. Using discrete element method (DEM) simulations on GPUs, we research into the relations of the flow rate with the geometrical parameters.展开更多
Beverloo’s scaling law is capable to describe the flow rate of grains discharging from hoppers.In this paper it shows the Beverloo’s scaling law is valid for varying material parameters.Then the flow rates from a ho...Beverloo’s scaling law is capable to describe the flow rate of grains discharging from hoppers.In this paper it shows the Beverloo’s scaling law is valid for varying material parameters.Then the flow rates from a hopper with different hopper and orifice size(D,D0)are studied by running large-scale simulations.When hopper size is fixed,numerical results show that Beverloo’s law is valid even if the orifice diameter is very large and then the criteria for this law are discussed.展开更多
文摘Following previous designs such as plate targets, rod targets, rotating targets and liquid metal targets, the gravity-driven dense granular-flow target (DGT), which combines the advantages of solid and liquid metal targets,becomes a new attractive choice[1]. The geometry of DGT consists of a cylindrical hopper and an internal coaxial cylindrical beam pipe as shown in Fig. 1. Using discrete element method (DEM) simulations on GPUs, we research into the relations of the flow rate with the geometrical parameters.
文摘Beverloo’s scaling law is capable to describe the flow rate of grains discharging from hoppers.In this paper it shows the Beverloo’s scaling law is valid for varying material parameters.Then the flow rates from a hopper with different hopper and orifice size(D,D0)are studied by running large-scale simulations.When hopper size is fixed,numerical results show that Beverloo’s law is valid even if the orifice diameter is very large and then the criteria for this law are discussed.
