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.　©　2022　IEEE.