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Turbulence Heat and Mass Transfer 5. Proceedings of the International Symposium on Turbulence Heat and Mass Transfer
September, 25-29, 2006, Dubrovnik, Croatia

DOI: 10.1615/ICHMT.2006.TurbulHeatMassTransf


ISBN Print: 978-1-56700-229-4

ISSN: 2377-2816

Effects of Large-Scale Stretching on Turbulent Flame Speed

pages 573-576
DOI: 10.1615/ICHMT.2006.TurbulHeatMassTransf.1210
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By analyzing expanding statistically spherical premixed turbulent flames, it is shown that the large-scale stretching of such a flame by spatially non-uniform mean flow substantially reduces flame speed as compared with the statistically planar flame, all other things being equal. This result implies that stretching of subfilter flame by large-scale turbulent eddies resolved in LES may substantially reduce the subfilter flame speed.

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