Abstract
The behavior of a single and pair of solid particles in particulate flow has been analyzed for different particle shapes. Five different particle shapes are considered which include triangle, ellipse, rectangle, square and a star. Results for each shape are presented by varying their orientations (angle). Numerical experiments are performed for pairs of falling particles which are about to collide and interacting with each other subject to the hydrodynamic forces and the gravitational force. Current study helps in determining the trajectories of different shaped particles and interactions of particle pair with each other while settling in a fluid channel. The hydrodynamic forces acting on the surface of a single falling particle have been calculated using an explicit volume integral approach and the results for drag and lift coefficients have been presented. An Eulerian approach consisting of fixed background mesh has been used in this work. The interaction between particles and fluid has been determined using a fictitious boundary method (FBM). A collision model proposed by Glowinski et al. is used to handle particle-particle interactions. The simulations of particulate flow are carried out using a multigrid finite element solver FEATFLOW.
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Shahid, M., Usman, K. Kinetics of suspended particles with different shapes interacting in a fluid channel. Comp. Part. Mech. (2023). https://doi.org/10.1007/s40571-023-00684-w
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DOI: https://doi.org/10.1007/s40571-023-00684-w