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

Abstract

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.

The effects of physical factors on the granular hopper flow

“…所有数据都 坐落在一条主曲线上. 图片来源文献 [70], 已获得授权 [75] . 图片来源文 献 [75], 已获得授权 Figure 16 The transverse distribution of particle number in the rough boundary channel [75].…”

“…The solid symbols are for an orifice width A=6D=6.6 cm, and the hollow symbols for A=10D=11 cm. All data points collapse together to form a master curve[70]. Reproduced from ref [70].…”

“…All data points collapse together to form a master curve[70]. Reproduced from ref [70]. with permission.…”