Abstract
This paper deals with recent and advanced visualization measurement techniques in single-and multi-phase flow fields centered on the authors'studies. Measurements introduced here are PIV (Particle Image Velocimetry), Hybrid PIV, fast X-ray CT, fast NMR (Nuclear Magnetic Resonance) imaging and Neutron radiography. The liquid flow in a positive displacement meter and a porous media is shown by use of the PIV with refraction index matching. The characteristics of the gas-liquid two-phase flow, including phase distributions and velocity fields for gas and liquid, are revealed by the Hybrid PIV, fast X-ray CT and so on. By the Hybrid PIV, both bubble motion and liquid flow around the bubble can be measured simultaneously. The phase distribution is shown by both the X-ray CT and the Neutron radiography. The liquid velocity field and the phase distribution are measured by the fast NMR imaging.
