The growth of particle dendrites on a single fiber during fibrous filtration was simulated by the Monte Carlo stochastic simulation and Kuwabara cell model.With the interactions between particles in the dendrites considered

the drag force contribution from each individual particle was calculated and analyzed.The results indicate that two steps may be distinguished in evolution of the pressure drop with deposit aspect for all filtration conditions studied.The variation of pressure drop is strongly depended upon filtration velocity

particle size and particle dendrite structure.However

in the range of fiber diameter concerned

there is no influence on the evolution of pressure drop.A new theoretical model for estimation of the pressure drop across the fibrous filter during clogging was developed with the understanding of the evolution of pressure drop for a dust-loaded fiber with deposit aspect.The model test shows that the calculated values are in good agreement with the experimental data for the filtration velocity from 0.01 m穝-1 to 0.3 m穝-1.It can be used for the prediction of pressure drop during fibrous filter clogging.