Nivarti, G, Thorne, B, Cant, S et al. (2 more authors) (2017) Comparisons of Flame Surface Density Measurements with Direct Numerical Simulations of a lean Methane-air Flame in High-intensity Turbulence. In: Conference on Numerical Combustion, 03-05 Apr 2017, Orlando, USA.
Abstract
The turbulent burning velocity of premixed flames exhibits a non-linear variation under increasing turbulence intensity of the unburned mixture. This phenomenon, known as the bending effect, has not been fully explained to date. A key aspect is the mechanism responsible for the observed departure from linearity. Experimental measurements of spherically-expanding flame kernels [Bradley et al. (2013), Proc.Combust.Inst., 34:1519–1526.] point towards local quenching as the primary mechanism of inhibition (bending). On the other hand, recent Direct Numerical Simulations of statistically-planar flames [Nivarti et al. (2017), Proc.Combust.Inst. , 36:(in press).] indicate that bending might be achieved in the absence of local quenching. The present study investigates the underlying mechanisms by comparing DNS data with experimental measurements of a lean premixed methane-air flame in high-intensity turbulence.
Metadata
Item Type: | Conference or Workshop Item |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | This is an author produced version of a presentation made at the Sixteenth International Conference on Numerical Combustion. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Engineering Thermofluids, Surfaces & Interfaces (iETSI) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 12 Dec 2017 15:40 |
Last Modified: | 24 Jan 2018 11:54 |
Status: | Published |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:125040 |