The present work is to provide experimental measurements of particle velocity in a microchannel flow at the Reynolds number of 10 and their respective particle positions in the channel where the velocities were measured. The particle position measurements which includes their depths were realized without an intricate optical set-up by controlling the particle path with multiple flow rates. The experimental measurements of particle velocity combined with the position measurements were subsequently used to confirm accuracy of particle velocities numerically estimated by a flow simulation exclusive of particle migration. The numerical estimates and experimental measurements of particle velocity agree with a difference of only less than 5%. The agreement was also supported by a detailed quantification.

本工作旨在提供雷诺数为10的微通道流中颗粒速度的实验测量，以及它们在测量速度的通道中各自的颗粒位置。通过以多种流速控制颗粒路径，无需复杂的光学设置即可实现包括其深度在内的颗粒位置测量。随后将颗粒速度的实验测量值与位置测量值结合使用，以确认通过除颗粒迁移以外的流动模拟数值估算的颗粒速度的准确性。粒子速度的数值估计和实验测量结果仅相差不到5％。该协议还得到了详细量化的支持。