Prediction of Brownian particle deposition in porous media usign the constricted tube model

摘要

The deposition of colloidal particles onto collector surfaces of porous media is investigated using the Brownian dynamics simulation method.The pore structure in a filter bed was characterized by the constricted tube model.The effects of various shapes of the total interaction energy curves of DLVO theory and the effects of different particle diameters on the collection efficiencies of particles are examined.The simulation results show that the particle collection efficiency is strongly dependent on the geometry of the tybe and on the shape of the total interaction energy curve.In a comparison with the convective diffusion model in the unfavorable deposition region.