Flow patterns and stresses on the wall in a moving granular bed with eccentric discharge

The flow patterns and stresses on the wall in a moving granular bed with eccentric discharge were investigated experimentally. The flow pattern histories of granular solids in the moving bed were recorded using a digital camcorder. The image processing system included a frame grabber. A new pressure gauge for simultaneously measuring the normal and shear stresses of granular solids was used. During filling the granular material, the variations in stresses acting on the side walls with time in a granular bed were observed. Also, the dynamic wall stresses were obtained during the eccentric discharge. Employing the results obtained by stress measurements and image processing, the pressure pulsation phenomena in a moving granular bed may be understood further.