2018/12/05 by Maoqiang Jiang, Jiang, Maoqiang, Shizhi Qian +3
Engineering · #Aerosol Filtration and Electrostatic Precipitation #Computational Physics (physics.comp-ph) #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Lattice Boltzmann Simulation Studies #Medical Physics (physics.med-ph) #Particle Dynamics in Fluid Flows
paper · pdf · doi:10.48550/arxiv.1812.02323
openalex publication_date 2018/12/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In recent years, manipulation of particles by inertial microfluidics has\nattracted significant attention. Most studies focused on inertial focusing of\nparticles suspended within liquid phase, in which the ratio of the density of\nthe particle to that of the medium is O(1). the investigation on manipulation\nof aerosol particles in an inertial microfluidics is very limited. In this\nstudy, we numerically investigate the aerosol particle motion in a 3D straight\nmicrochannel with rectangular cross section by fully resolved simulation of the\nparticle-air flow based on the contiuum model. The air flow is modeled by the\nNavier-Stokes equations, and particle's motions, including transition and\nrotation, are governed, respectively, by the Newton's second law and the Euler\nequations without using any approximation models for the lift and drag forces.\nThe coupled mathematical model is numerically solved by combining immersed\nboundary with lattice Boltzmann method (IB-LBM). We find that the Reynolds\nnumer, the particle's initial position, particle's density, and particle's\ndiameter are the influential parameters in this process. the equilibrium\npositions and their stabilities of aerosols are different form those suspended\nin liquid.\n