Multicomponent model of deformation and detachment of a biofilm under fluid flow.

ABSTRACT: A novel biofilm model is described which systemically couples bacteria, extracellular polymeric substances (EPS) and solvent phases in biofilm. This enables the study of contributions of rheology of individual phases to deformation of biofilm in response to fluid flow as well as interactions between different phases. The model, which is based on first and second laws of thermodynamics, is derived using an energetic variational approach and phase-field method. Phase-field coupling is used to model structural changes of a biofilm. A newly developed unconditionally energy-stable numerical splitting scheme is implemented for computing the numerical solution of the model efficiently. Model simulations predict biofilm cohesive failure for the flow velocity between [Formula: see text] and [Formul

SUBMITTER: Tierra G 

PROVIDER: S-EPMC4424679 | biostudies-literature | 2015 May

REPOSITORIES: biostudies-literature