Coriolis effect mitigation for single particle motion in centrifugal hypergravity field

The Coriolis effect, induced by centrifugal hypergravity, can significantly distort granular flow when studying the rapid flow characteristics of landslides and debris avalanches using centrifuge modelling approaches. This effect can either modify flow density or alter trajectory paths depending on flume arrangement, thus leading to inaccuracies in experimental outcomes. In this study, a lateral tilting method is proposed to mitigate the Coriolis effect for single particle motion in vertically arranged flumes, aiming to rectify the particle’s trajectory. The theoretical formulas for this method are initially derived, followed by validation through centrifugal hypergravity experiments and discrete element method simulations. The results indicate that the proposed method can reduce the offset of particle trajectory induced by Coriolis force to a certain extent. Specifically, when the flume is tilted laterally by 9°, the particle’s trajectory shows minimal offset, closely resembling the trajectory under normal gravity conditions. Moreover, theoretical results indicate that the single particle trajectory is independent of the g-level.