Numerical simulation of particle interception efficiency on different fiber shapes

We use the Multiple-Relaxation-Time Lattice Boltzmann model to simulate the flow field and particle motion in a 2D porous media configured with various fiber cross-section shapes. Four sets of experiments are conducted to investigate the particle interception efficiency of four fiber structures with the same porosity. We find that: (1) with the same porosity, the filtration efficiency of hexagonal fibers is higher than that of fibers in other tested shapes; (2) sparse structures as shown in the ellipse and rectangular cases yield low filtration efficiencies even with a low porosity number.