Discharge flow of granular particles through an orifice on a horizontal hopper: Effect of the hopper angle*

• DOI: 10.1088/1674-1056/ab7b51
• Publication Date: 2020-03-01T11:30:18Z
• Authors: Xin Wang; Hong-Wei Zhu; Qing-Fan Shi; Ning Zheng
• Keywords: 0103 physical sciences; 01 natural sciences

We experimentally investigate the effect of the hopper angle on the flow rate of grains discharged from a two-dimensional horizontal hopper on a conveyor belt. The flow rate grows with the hopper angle, and finally reaches a plateau. The curve feature appears to be similar for different orifice widths and conveyor belt-driven velocities. On the basis of an empirical law of flow rate for a flat-bottom hopper, we propose a modified equation to describe the relation between the flow rate and hopper angle, which is in a good agreement with the experimental results.