2022
DOI: 10.1063/5.0095866
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Abstract: While the flamelet paradigm offers the opportunity to simplify computations of mean species concentrations in turbulent flames, a widely accepted criterion of the validity of this paradigm has not yet been elaborated. In this regard, different physical mechanisms are discussed, and flame folding is one of them. The present work aims at exploring the eventual influence of flame folding on the local flame structure in a turbulent flow. For this purpose, a new diagnostic technique was applied to processing comple… Show more

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Cited by 6 publications
(4 citation statements)
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“…For instance, Doan et al 74,75 have reported that eddies larger than 2 δ L contribute less than 10% to the total tangential strain rate computed along such a surface. It is worth stressing, however, that the PSR model requires a small ratio of Δ / δ L to resolve highly non-linear spatial variations of reaction rates, localized to narrow zones, 3246 rather than to resolve wrinkles of the zone surface, created by small-scale turbulent eddies. The former task requires significantly better resolution.…”
Section: Discussionmentioning
confidence: 99%
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“…For instance, Doan et al 74,75 have reported that eddies larger than 2 δ L contribute less than 10% to the total tangential strain rate computed along such a surface. It is worth stressing, however, that the PSR model requires a small ratio of Δ / δ L to resolve highly non-linear spatial variations of reaction rates, localized to narrow zones, 3246 rather than to resolve wrinkles of the zone surface, created by small-scale turbulent eddies. The former task requires significantly better resolution.…”
Section: Discussionmentioning
confidence: 99%
“…As the simulations were discussed in recent papers, 39,41,4648 only a summary is provided below. A statistically planar, lean (the equivalence ratio Φ = 0 . 81 ) hydrogen-air flame propagating in a box ( 19 . 18 × 4 . 8 × 4 . 8 mm) was simulated by adopting the Pencil code 49 to numerically integrate unsteady and three-dimensional continuity, compressible Navier-Stokes, species and energy transport equations.…”
Section: Dns Attributes and Datamentioning
confidence: 99%
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