抄録
An optical fiber probe method is one of the efficient and reliable measurement methods for gas-liquid two-phase flows. For measurement of small and medium size bubbles/droplets, we developed a Four-Tip Optical fiber Probe (F-TOP) and a Single-Tip Optical fiber Probe (S-TOP). In this study, we newly developed an optical fiber probe (OFP) processed by femtosecond pulse laser in order to measure tens micrometer bubbles/droplets. We demonstrated a measurement of millimeters size droplets and discussed its capability for measurement of velocities and diameters of droplets. As a result, the difference of measurement results of droplets diameter and velocity between the new OFP and visualization is within 5%.
