Abstract This paper presents the results of using an inertial measurement unit (IMU) to study various dynamic relationships in horizontal slug flow pneumatic conveying. The accuracy of the IMU was assessed and compared to particle image velocimetry (PIV) and once good agreement was confirmed it was used to investigate various aspects of slug flow. Relative movement between core particles and slugs tails and heads was assessed using relative pressures and quantified times spent in a slug. It was found that the propagation of particles backwards through a slug is relatively constant. Pressure-velocity relationship was observed that was theorised to be related to variations in stationary layer ahead of the slugs. Observations of further nuanced features of slug motion are also included to demonstrate the capabilities of IMUs in capturing the many dynamic aspects of the flow.

中文翻译：

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惯性测量单元作为密相气力输送中的工具。团状流中速度测量精度、压力和速度关系的研究

摘要 本文介绍了使用惯性测量单元 (IMU) 研究水平段塞流气力输送中各种动态关系的结果。评估了 IMU 的准确性，并与粒子图像测速 (PIV) 进行了比较，一旦确认良好的一致性，它将被用于研究段塞流的各个方面。使用相对压力和在段塞中花费的量化时间来评估核心粒子与段塞尾部和头部之间的相对运动。发现粒子通过段塞向后传播是相对恒定的。观察到的压力-速度关系理论上与段塞前静止层的变化有关。