effect of scale on the hydrodynamics of gas-solid fluidized beds was investigated in two fluidized beds of 152 mm and 78 mm in diameter.  air at room temperature was used as the fluidizing gas in the bed of sand particles. the radioactive particle tracking (rpt) technique was employed to obtain the instantaneous positions of the particles at every 20 ms of the experiments. these data were used ...

effect of temperature on hydrodynamics of bubbling gas-solid fluidized beds was investigated.  experiments were carried out in the range of 25-600 ºc and different superficial gas velocities in the range of 0.17-0.78 m/s with sand particles. time-position trajectory of particles was obtained by radioactive particle tracking technique. these data were used for determination of mean velocities of...

Effect of temperature on hydrodynamics of bubbling gas-solid fluidized beds was investigated.  Experiments were carried out in the range of 25-600 ºC and different superficial gas velocities in the range of 0.17-0.78 m/s with sand particles. Time-position trajectory of particles was obtained by radioactive particle tracking technique. These data were used for determination of mean velocitie...

HISPEC (High-resolution in-flight spectroscopy) deals with a versatile, high resolution, high efficiency spectroscopy set-up to address questions in nuclear structure, reactions and astrophysics using radioactive beams from the Super FRS with energies of 3-150 MeV/u. The radioactive beams will be used for γ-ray, charged particle and neutron spectroscopy. The HISPEC set-up will comprise beam tra...

The present paper reviews the foundation and application of gamma-ray transmission Computed Tomography (CT) and Radioactive Particle Tracking (RPT) methods in industry. Those methods are primarily useful in oil and petrochemical industries, where processes need to be diagnosed for the purpose of design and/or operating conditions optimization. There are two categories of industrial tomography s...

Currently, various industrial processes are carried out in fluidized bed reactors. Knowing its internal dynamics is fundamental for the intensification of these processes. This work assesses motion calcium alginate spheres under influence an upward fluid flow within a 1.2 m high and 0.1 inner diameter acrylic column. The liquid–solid was compared with gas–liquid–solid operation mode terms mixin...

Effect of scale on the hydrodynamics of gas-solid fluidized beds was investigated in two fluidized beds of 152 mm and 78 mm in diameter.  Air at room temperature was used as the fluidizing gas in the bed of sand particles. The Radioactive Particle Tracking (RPT) technique was employed to obtain the instantaneous positions of the particles at every 20 ms of the experiments. These data were u...

A pair of twin position-sensitive parallel plate avalanche counters have been developed at the Australian National University as a tracking system to aid in the further rejection of unwanted beam particles from a 6.5 T super conducting solenoid separator named SOLEROO. Their function is to track and identify each beam particle passing through the detectors on an event-by-event basis. In-beam st...

We develop a new algorithm for the tracking of radioactive particles using Positron Emission Particle Tracking (PEPT). The relies on maximization likelihood simple Gaussian mixture model lines response associated with positron annihilation. includes component that accounts spurious caused by scattering and random coincidence, it treats relative activity as well their positions parameters to be ...