Advection of passive particles over flow networks
arXiv:1312.4849 · doi:10.1103/PhysRevE.89.020801
Abstract
The problem of stochastic advection of passive particles by circulating conserved flows on networks is formulated and investigated. The particles undergo transitions between the nodes with the transition rates determined by the flows passing through the links. Such stochastic advection processes lead to mixing of particles in the network and, in the final equilibrium state, concentration of particles in all nodes become equal. As we find, equilibration begins in the subset of nodes, representing flow hubs, and extends to the periphery nodes with weak flows. This behavior is related to the effect of localization of the eigenvectors of the advection matrix for considered networks. Applications of the results to problems involving spreading of infections or pollutants by traffic networks are discussed.
5 pages, 4 figures
References in corpus (5)
- Prediction and predictability of global epidemics: the role of the airline transportation network
- Reaction-diffusion processes and metapopulation models in heterogeneous networks
- Turing patterns in network-organized activator-inhibitor systems
- Laplacian Spectra as a Diagnostic Tool for Network Structure and Dynamics
- Traveling and pinned fronts in bistable reaction-diffusion systems on network