Effects of spatial structure and diffusion on the performances of the chemostat

Details Effects of spatial structure and diffusion on the performances of the chemostat Effects of spatial structure and diffusion on the performances of the chemostat

2010-11-16

arxiv.org/abs/1011.3742v1

Mathematics

Dynamical Systems

Scientific paper

Given hydric capacity and nutrient flow of a chemostat-like system, we analyse the influence of a spatial structure on the output concentrations at steady-state. Three configurations are compared: perfectly-mixed, serial and parallel with diffusion rate. We show the existence of a threshold on the input concentration of nutrient for which the benefits of the serial and parallel configurations over the perfectly-mixed one are reversed. In addition, we show that the dependency of the output concentrations on the diffusion rate can be non-monotonic, and give precise conditions for the diffusion effect to be advantageous. The study encompasses dead-zone models

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