Acadlore takes over the publication of IJCMEM from 2025 Vol. 13, No. 3. The preceding volumes were published under a CC BY 4.0 license by the previous owner, and displayed here as agreed between Acadlore and the previous owner. ✯ : This issue/volume is not published by Acadlore.
Investigation of a Gas–Particle Flow with Particle–Particle and Particle–Wall Collisions by Immersed Boundary Method
Abstract:
We investigated gas–particle flows by using the three-dimensional incompressible Navier–Stokes equation with the immersed boundary method (IBM) to treat particles–wall collisions. We compared flow structures from the two-way coupled simulation with the one-way simulation that is usually used in the industrial simulation. In this study, all objectives, which are particles and walls, are defined by the level-set function for the ghost-cell method of the IBM. The proposed algorithms to represent particle–particle and particle–wall collisions are simple and stable for the coupling simulation. More- over, flow structures obtained with the coupled simulation of the moving, colliding and rebounding particles are in good agreement with the previous numerical and experimental results. The one-way and two-way coupling simulations were carried out based on a number of particles of 50, 100 and 200, respectively. As a result, the one-way scheme indicated more frequently collisions on the particle and wall than the two-way scheme. The reason is that the one-way scheme ignored the particle–flow interactions.
