Development of neutron radiography techniques to measure velocities of particles and fluid in a spouted bed

Research Project

Project/Area Number	02555188
Research Category	Grant-in-Aid for Developmental Scientific Research (B)
Allocation Type	Single-year Grants
Research Field	化学工学
Research Institution	Kyoto University
Principal Investigator	OGINO Fumimaru Kyoto Univ., Faculty of Engineering Professor, 工学部, 教授 (50026069)
Co-Investigator(Kenkyū-buntansha)	KANMDA Keiji Kyoto Univ., Research Reactor Institute Associate Professor, 原子炉実験所, 助教授 (10027419) YONEDA Kenji Kyoto Univ., Research Reactor Institute Instructor, 原子炉実験所, 助手 (10027443) FUJINE Shigenori Kyoto Univ., Research Reactor Institute Instructor, 原子炉実験所, 助手 (90027441) MISHIMA Kaichiro Kyoto Univ., Research Reactor Institute Associate Professor, 原子炉実験所, 助教授 (60027472) KAMATA Masahiro Tottori Univ., Faculty of Engineering Associate Professor, 工学部, 助教授 (20204604)
Project Period (FY)	1990 – 1991
Project Status	Completed (Fiscal Year 1991)
Budget Amount *help	¥5,100,000 (Direct Cost: ¥5,100,000) Fiscal Year 1991: ¥700,000 (Direct Cost: ¥700,000) Fiscal Year 1990: ¥4,400,000 (Direct Cost: ¥4,400,000)
Keywords	Neutron Radiography / Spouted Bed / Flow Visualization / Liquid-Solid Two Phase Flow
Research Abstract	Motion of solid particles in a spouted bed was visualized by using neutron radiography (real time TV). Trajectories and velocity profiles of particles in annular region were obtained from the radiography. Result indicates that both the trajectory and radial profile of particle velocity normalized by mean velocity through nozzle are almost independent of height of packing and Reynolds number. Profile of packing density in a spouted bed was also measured by using neutron radiography (film method). By analyzing the digitalized optical density of exposed film, the shape of spouted region was clearly recognized and it was also made clear that the lower part of the annular region was denser than the upper one.