id="p0005">Scale-up and hydrodynamics of gas-solid spouted beds are investigated.
id="p0010">The common scale-up methodology for spouted beds is based on a set of dimensionless groups.
id="p0015">This methodology is evaluated in this study using advanced non-invasive Radioactive Particle Tracking (RPT) technique.
id="p0020">Two different sizes of spouted beds with matched and mismatched dimensionless groups were used.
id="p0025">The results illustrate that the above method is not adequate to achieve hydrodynamics similarity between the two beds.