Diffusive and convective effects on particle transport through hexagonal periodic tube

In this research, the diffusive and convective effects on particle transport through a hexagonal periodic tube are investigated. The problem for non-reactive particles is first confined to the central wave section. The fluid velocity field is calculated using the Boundary Element Method (BEM), while the convection–diffusion process is computed using the Explicit Finite Difference Method (EFDM). The novelty of this study lies in analysing the combined influence of diffusion and convection within a hexagonal periodic tube. The total mass and centre of mass of the particles throughout the tube are evaluated in the present analysis. Particle movement is demonstrated under both convection and diffusion in these periodic tubes; however, in the case of diffusion alone, no net particle movement occurs due to the geometric symmetry of the tube. For varying convection strengths and fixed diffusion coefficients, the particles consistently move in the negative z-direction. Net particle transport occurs in both the positive and negative z-directions for large and small diffusion coefficients, respectively. The findings of this research are of significant interest in the fields of process engineering, biomecosmology, renewable energy systems, ionised flow studies, nanotechnology, medical science, and several other related domains.