Flow of granular material through orifices.

This study introduces and investigates a general method for measuring the flow of granular material through orifices. During the last decade or so, the phenomenon of the mechanization of material handling in modern industry has developed into immense proportions. But the problem of the handling of granular material through orifices lies, obviously, at the very root of this tremendous development. The present study is an attempt to contribute to the solution of this problem. Laboratory investigations were conducted with Ottawa Sand, glass bins, sand-paper bins and circular orifices. The effect of head, diameter of bin, diameter of orifice, roughness of bin walls and vibrations on the flow were studied. Graphs were plotted and the flow constants ascertained