A Study of particle flow and deposition in filter media using CFD

Recently, nanoparticles have been largely employed in intelligent materials and human health. This creates a need for industrial nanoparticle filtration. In this study the air flow and particle deposition in a two-dimensional model filter media was studied. A statistical model was used to determine the location of the fibers and the commercial packages ANSYS CFX and Fluent were used for the simulations. Two numerical conditions were studied: one considering no slip at the fiber surfaces and another one using full slip. The results of pressure drop for the first situation agreed better with experimental data (42 Pa). Thereby, this condition was used to obtain the deposition of 0.5 μm particles, in which Eulerian-Lagrangian approach was used to represent the fluid and dispersed phases, respectively. It was observed a 45% particle deposition efficiency.