Interface-resolved simulations of non-spherical particles with collisions

Particle collisions are likely to happen when particles are close to each other. These collisions change the trajectories of the particles and modify the flow field around them. While the collisions of spherical particles have been studied extensively, the scenario of non-spherical particles is less understood. In this work, we present numerical simulations of spheroid particles considering collisions among them. We use the immersed boundary method to resolve the interactions between the flow and particles. Collisions between particles are modelled by a linear spring-dashpot system. The Adaptive Collision Time Model is employed to calculate the contact force. These numerical tools enable us to study realistic flows where point particle model is not applicable, providing further insights into the effects of collisions on spheroids and fluid flows.