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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Conference PaperKAUST Department
Computer, Electrical and Mathematical Science and Engineering (CEMSE) DivisionApplied Mathematics and Computational Science Program
Extreme Computing Research Center
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2021-11-01Permanent link to this record
http://hdl.handle.net/10754/675028
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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:10.1088/1742-6596/2116/1/012015Publisher
IOP PublishingConference/Event name
8th European Thermal Sciences Conference, EUROTHERM 2021Additional Links
https://iopscience.iop.org/article/10.1088/1742-6596/2116/1/012015ae974a485f413a2113503eed53cd6c53
10.1088/1742-6596/2116/1/012015