Investigation of Filtration Efficiency of Nanofiber Based Filters in Ultrafine Particles Range during Cake Formation

摘要

A filtration model taking particle-fiber as well as particle-particle interactions into account was suggested and applied on a 3D simulation model of the nanofiber based filter, which was based on its SEM image. A theoretical study was done to evaluate the filtration efficiency as a function of number of particles, way of distributing the particles and the penetration profile through the filter. It was clearly shown that the cake formation has a significant effect on the filtration efficiency. Additionally, a visual representation of the cake formation was generated according the suggested model to get a better understanding of the cake morphology.