High resolution gamma ray tomography for two-phase flow studies

Recently, we developed a high resolution gamma ray tomography system that is operated with a Cs-137 source and comprises a detector arc with 320 small scintillation detector elements. With this system different flow diagnostic applications have been investigated, such as the measurement of phase distributions in water-steam two-phase flows and hydrodynamics in stirred and trickle-bed type chemical reactors. The presentation introduces the application of a high resolution gamma ray tomography technique to the measurement of phase fractions and liquid hold-up in industrial multi-phase flow systems.