ODE-and PDE-based modeling of biological transportation networks

Jan Haskovec, Lisa Maria Kreusser, Peter Markowich

OAI: oai:purehost.bath.ac.uk:openaire_cris_publications/50f386de-fb45-46da-b933-31580652e1e9 • DOI: https://doi.org/10.4310/CMS.2019.v17.n5.a4

We study the global existence of solutions of a discrete (ODE-based) model on a graph describing the formation of biological transportation networks, introduced by Hu and Cai. We propose an adaptation of this model so that a macroscopic (PDE-based) system can be obtained as its formal continuum limit. We prove the global existence of weak solutions of the macroscopic PDE model. Finally, we present results of numerical simulations of the discrete model, illustrating the convergence to steady states, their non-uniqueness as well as their dependence on initial data and model parameters.

continuum limit Energy dissipation numerical modeling pattern formation weak solutions /dk/atira/pure/subjectarea/asjc/2600/2600 name=General Mathematics /dk/atira/pure/subjectarea/asjc/2600/2604 name=Applied Mathematics