Transition of liesegang precipitation systems: simulations with an adaptive grid pde method

P.A. Zegeling, I. Lagzi, F. Izsak

    Research output: Book/ReportReportProfessional

    99 Downloads (Pure)

    Abstract

    The dynamics of the Liesegang type pattern formation is investigated in a centrally symmetric two-dimensional setup. According to the observations in real experiments, the qualitative change of the dynamics is exhibited for slightly different initial conditions. Two kinds of chemical mechanisms are studied; in both cases the pattern formation is described using a phase separation model including the Cahn-Hilliard equations. For the numerical simulations we make use of a recent adaptive grid PDE method, which successfully deals with the computationally critical cases such as steep gradients in the concentration distribution and investigation of long time behavior. The numerical simulations show a good agreement with the real experiments.
    Original languageUndefined
    Place of PublicationEnschede
    PublisherCentre for Telematics and Information Technology (CTIT)
    Number of pages13
    Publication statusPublished - 23 Dec 2008

    Publication series

    NameCTIT Technical Report Series
    PublisherCentre for Telematics and Information Technology, University of Twente
    No.412/TR-CTIT-08-76
    ISSN (Print)1381-3625

    Keywords

    • IR-65324
    • MSC-70K99
    • MSC-70K70
    • MSC-65P99
    • EWI-14929
    • moving grid technique
    • Pattern formation
    • Liesegang phenomenon
    • METIS-255450

    Cite this