Regularization modeling for large-eddy simulation of diffusion flames

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    Abstract

    We analyze the evolution of a diffusion flame in a turbulent mixing layer using large-eddy simulation. The large-eddy simulation includes Leray regularization of the convective transport and approximate inverse filtering to represent the chemical source terms. The Leray model is compared to the more conventional dynamic mixed model. The location of the flame-center is defined by the `stoichiometric' interface. Geometrical properties such as its surface-area and wrinkling are characterized using an accurate numerical level-set quadrature method. This allows to quantify flame-properties as well as turbulence modulation effects due to coupling between combustion and turbulent transport. We determine the active flame-region that is responsible for the main part of the chemical conversion in the flame and compare direct and large-eddy simulation predictions.
    Original languageUndefined
    Title of host publicationEuropean Conference on Computational Fluid Dynamics: ECCOMAS CFD 2006
    EditorsP. Wesseling, E. Oñate, J. Périaux
    Place of PublicationDelft
    PublisherAmerican Physical Society
    Pages452
    Number of pages20
    ISBN (Print)90-9020970-0
    Publication statusPublished - Sep 2006
    Event4th European Conference on Computational Fluid Dynamics, ECCOMAS ECFD 2006 - Egmond aan Zee, Netherlands
    Duration: 5 Sep 20068 Sep 2006
    Conference number: 4

    Publication series

    Name
    Number11

    Conference

    Conference4th European Conference on Computational Fluid Dynamics, ECCOMAS ECFD 2006
    Abbreviated titleECCOMAS ECFD
    CountryNetherlands
    CityEgmond aan Zee
    Period5/09/068/09/06

    Keywords

    • EWI-9025
    • METIS-238748
    • IR-66866

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