Solid Particles Transport in Porous Media: Experimentation and Modelling

摘要: Solid particle detachment, transport and deposition in natural or artificial porous media have been the subject of an intense research effort last four decades. Particle-facilitated contaminants transport, accidents due to internal erosion hydraulic structures permeability decreases oil wells, drinking water supply recharge aquifers, aroused a growing interest. In this study, results two laboratory experimental systems for tracer tests columns are presented. System 1 concerns step-input injection method where studies were realized. The first study is devoted studying kinetics (Kdep) Suspended Particles (SP) second evaluation medium damage (clogging release). However, system 2 pulse whose aim was SP kinetics. interpretation analysis Break-Through Curves (BTCs) obtained using analytical numerical solution convection–dispersion equation (1D) including source term (deposition release term). Using showed decrease coefficient with flow velocity until critical Kdep decreases. For high injected volumes 1, occurs throughout entrance medium.