Investigation of liquid–solids fluidized bed of different particle size through radioactive particle tracking techniques

Radioactive particle tracking technique (RPT) has proven to be a powerful and versatile technique both in terms of the richness of information it provides as well as the variety of multiphase flow situations it has been successfully employed. This work reports the execution of RPT technique for investigation of liquid–solids fluidized bed of different particle sizes (1.2 and 0.6 mm). Experiments are performed in a 10 cm ID cylindrical column for different liquid velocities. Further, RPT experiments are performed for both the solids and effect of liquid velocity and particle size on flow behaviour of liquid–solid fluidized bed is quantified.