Capillary interaction-induced rolling resistance between elliptical particles and its influence on grain column length at pendular state

Abstract This paper investigates capillary torque induced by capillary interaction between mono-sized elliptical disks within the pendular regime. When relative rotation between a pair of elliptical particles (2D disks) takes place, the liquid meniscus between the particles is distorted and generates unbalanced capillary forces around the contact, which further induces capillary torque that is a resistance to particle rotation. The variations …