A 2D channel-clogging biofilm model
Based on authors' abstract: The authors present a model of biofilm growth in a long channel where the biomass is assumed to have the rheology of a viscous polymer solution. The competition between growth and erosion-like surface detachment due to the flow is examined. A particular focus of the investigation is the effect of the biofilm growth on the fluid flow in the pores, and the issue of whether biomass can grow sufficiently to shut off fluid flow through the pores, thus clogging the pore space. Net biofilm growth is coupled along the pore length via flow rate and nutrient transport in the pore flow. The present 2D model extends existing results on stability of 1D steady state biofilm thicknesses to show that, in the case of flows driven by a fixed pressure drop, full clogging of the pore can indeed happen in certain cases dependent on the functional form of the detachment term.
scientific article; zbMATH DE number 6480838