5 papers · 1 filter
Invariant-region-preserving high-order schemes for a model of reactive sedimentation
Juan Barajas-Calonge, Julio Careaga, Luis-Miguel Villada
Reactive sedimentation of mixtures composed by biological and inert solid matter including liquid substrates is modelled by a system of convection-diffusion-reaction equations. In…
An invariant-region-preserving scheme for a convection-reaction-Cahn-Hilliard multiphase model of biofilm growth in slow sand filters
Julio Careaga, Stefan Diehl, Jaime Manríquez
A multidimensional model of biofilm growth present in the supernatant water of a Slow Sand Filter is derived. The multiphase model, consisting of solid and liquid phases, is writte…
A multilayer shallow water model for polydisperse reactive sedimentation
Julio Careaga, Víctor Osores
A three-dimensional model of polydisperse reactive sedimentation is developed by means of a multilayer shallow water approach. The model consists of a variety of solid particles of…
Numerical schemes for a moving-boundary convection-diffusion-reaction model of sequencing batch reactors
Raimund Bürger, Julio Careaga, Stefan Diehl +1
Sequencing batch reactors (SBRs) are devices widely used in wastewater treatment, chemical engineering, and other areas. They allow for the sedimentation and compression of solid p…
A method-of-lines formulation for a model of reactive settling in tanks with varying cross-sectional area
Raimund Bürger, Julio Careaga, Stefan Diehl
Reactive settling denotes the process of sedimentation of small solid particles dispersed in a viscous fluid with simultaneous reactions between the components that constitute the…