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    Assessment of local and non–local turbulent flow components on turbulence–flame interaction

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    Er-Raiy_2021_J._Phys.__Conf._Ser._2116_012015.pdf
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    Type
    Conference Paper
    Authors
    Er-raiy, Aimad cc
    Boukharfane, Radouan
    Alzaben, Linda cc
    Parsani, Matteo cc
    KAUST Department
    Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division
    Applied Mathematics and Computational Science Program
    Extreme Computing Research Center
    Date
    2021-11-01
    Permanent link to this record
    http://hdl.handle.net/10754/675028
    
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    Abstract
    In the framework of turbulence-flame interaction, the flame is characterized by the gradient of a reactive scalar such as the progress variable, whereas the turbulence is represented by the vorticity and the strain rate. Quantitative assessment of this interaction is performed trough the study of the coupled transport between these quantities that are subject to the effects of heat release and chemical reactions. The present analysis aims at improving the understanding of the small scale turbulence – flame interaction properties, through the introduction of an additive decomposition of the strain rate and vorticity fields into their local and non-local components. The respective role of the local and non-local effects is studied for a broad range of Karlovitz numbers, by virtue of direct numerical simulations (DNS) of turbulent, premixed, lean, and statistically planar flames of methane-air. In the conditions of the present study, the alignment between flame front normals and the strain rate is found to be dominated by the local contribution from the strain rate tensor.
    Citation
    Er-Raiy, A., Boukharfane, R., Alzaben, L., & Parsani, M. (2021). Assessment of local and non–local turbulent flow components on turbulence–flame interaction. Journal of Physics: Conference Series, 2116(1), 012015. doi:10.1088/1742-6596/2116/1/012015
    Publisher
    IOP Publishing
    Conference/Event name
    8th European Thermal Sciences Conference, EUROTHERM 2021
    DOI
    10.1088/1742-6596/2116/1/012015
    Additional Links
    https://iopscience.iop.org/article/10.1088/1742-6596/2116/1/012015
    ae974a485f413a2113503eed53cd6c53
    10.1088/1742-6596/2116/1/012015
    Scopus Count
    Collections
    Conference Papers; Applied Mathematics and Computational Science Program; Extreme Computing Research Center; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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