Computing and Visualization in Science

, Volume 12, Issue 2, pp 77–85 | Cite as

Global random walk modelling of transport in complex systems

  • N. Suciu
  • C. Vamoş
  • I. Turcu
  • C. V. L. Pop
  • L. I. Ciortea
REGULAR ARTICLE

Abstract

The Global random walk algorithm performs simultaneously the tracking of large collections of particles and permits massive simulations at reasonable costs. Applications were developed for transport in systems with anisotropic, non-homogeneous, and randomly distributed parameters. As a first illustration we present simulations for diffusion in human skin. Further, a case study for contaminant transport in groundwater shows that the realizations of the transport process converge in mean square limit to a Gaussian diffusion. This investigation also indicates that the use of the Kraichnan routine, based on periodic random fields, yields reliable simulations of transport in Gaussian velocity fields.

Keywords

Global random walk Lattice gas Human skin Groundwater contamination 

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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • N. Suciu
    • 1
    • 2
  • C. Vamoş
    • 2
  • I. Turcu
    • 3
  • C. V. L. Pop
    • 3
  • L. I. Ciortea
    • 3
    • 4
  1. 1.Institute of Applied MathematicsFriedrich-Alexander University of Erlangen-NurembergErlangenGermany
  2. 2.“Tiberiu Popoviciu” Institute of Numerical Analysis, Cluj Napoca Branch of the Romanian AcademyCluj-NapocaRomania
  3. 3.National R&D Institute for Isotopic and Molecular TechnologiesCluj-NapocaRomania
  4. 4.School of EEIESouth Bank UniversityLondonUK

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