Host: The Japan Society of Mechanical Engineers
Name : The 27th International Conference on Nuclear Engineering (ICONE27)
Date : May 19, 2019 - May 24, 2019
We experimentally investigated the flow mixing characteristics in a cross-flow plane in a bed of randomly packed spheres with a bed-to-bead ratio of 6.3. The velocity fields on four transverse planes were obtained by applying the matched-index-of-refraction (MIR) and time-resolved particle image velocimetry (TR-PIV) techniques at Reynolds numbers of 700 and 1,200. The combination of the MIR and TR-PIV techniques allow the flow to be analyzed noninvasively. From the obtained TR-PIV velocity vector fields, the first- and second-order flow statistics, such as mean velocity, root-mean-square fluctuating velocity, and Reynolds stress, were computed and presented in the paper. The TRPIV results revealed various flow patterns in the transverse plane of the facility of randomly packed spheres, such as swirling flow structures, by-pass flows, and circulation flow regions.