Error analysis of large-eddy simulation of the turbulent non-premixed sydney bluff-body flame

A.M. Kempf, Bernardus J. Geurts, J.C. Oefelein

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    A computational error analysis is applied to the large-eddy simulation of the turbulent non-premixed Sydney bluff-body flame, where the error is defined with respect to experimental data. The errorlandscape approach is extended to heterogeneous compressible turbulence, which is coupled to combustion as described by a flamelet model. The Smagorinsky model formulation is used to model the unknown turbulent stresses. We introduce several measures to quantify the total simulation error and observe a striking ‘valley-structure’ in the error that arises as function of the spatial resolution and the Smagorinsky length parameter. The optimal refinement strategy that can be extracted from this error-landscape is reminiscent of that for non-reacting turbulent flow.
    Original languageUndefined
    Pages (from-to)2408-2419
    Number of pages12
    JournalCombustion and flame
    Issue number12
    Publication statusPublished - 2011


    • METIS-285095
    • Turbulent non-premixed combustion
    • Large eddy simulation
    • IR-79659
    • MACS-MMS: Multiscale Modelling and Simulation
    • Error analysis
    • EWI-21439

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