ABSTRACT
The flow patterns and stresses on the wall in a moving granular bed with centric discharge were investigated experimentally. The flow pattern histories of granular solids in the moving bed were recorded by a digital camcorder. A pressure gauge for simultaneously measuring the normal and shear stresses of granular solids acting on its sensible surface was developed. During filling the granular material, the variations in stresses acting on the side walls with time in a granular bed were observed. In addition, during the centric discharge, the variation in dynamic stresses on the side walls was obtained. Employing the results obtained by stresses measuring and image processing, the phenomenon of the pressure pulsation in a moving granular bed may be understood further.
