Energy-Balanced Oscillatory Model for Description of Particles Deposition and Re-Entrainment on Fiber Collector

摘要

The pattern of filling of the internal space in fibrous filters strongly influences the behavior of the filter at the stage of nonsteady-state deep bed filtration.The model of single-fiber loading with deposited particles,including the resuspension effect,is presented.Structures of deposited charged particles from the range of diameters 0.01-10 mum deposited on the electret fiber of diameter 30 mum were calculated.Results of calculations indicate that the distribution of deposits around the fiber depend on particle size.Fractal dimension and local porosity of deposits depend on the predominant mechanism of deposition.The incorporation of the resuspension effect into the deposition models shows significant differences of the geometry of dendrites in comparison with the case of model in which resuspension was neglected.