Dust Cake Deposition Simulating on Fibrous Media Surface

In order to understand the effect of particle motion mechanism and size distribution of dust cake on growth process in fibrous media surface, the pseudo-random movement model was used and Pe number was defined as the ratio of inertia movement and diffusion movement. The impact of proportion of particle inertia movement and diffusion movement on the dust cake growth process on the fibrous media surface was studied by simulation. The results showed that the dust cake surface was more irregular with the Pe number decreasing. The larger dust cake porosity and more uneven distribution appeared with wider dispersion of particles. The dust cake was more uneven with stronger particle dispersion movement. Porosity of dust cake formed by poly-disperse particles was less than that by mono-disperse particles.