Analysis of Flame Topology and Burning Rates

Shrey Trivedi (), Girish V. Nivarti () and R. Stewart Cant ()
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Shrey Trivedi: University of Cambridge, Department of Engineering
Girish V. Nivarti: University of Cambridge, Department of Engineering
R. Stewart Cant: University of Cambridge, Department of Engineering

Chapter Chapter 1 in Data Analysis for Direct Numerical Simulations of Turbulent Combustion, 2020, pp 1-17 from Springer

Abstract: Abstract Datasets generated using Direct Numerical Simulation (DNS) are used to investigate the influence of local flame surface topology on global flame propagation. A mathematical framework based on Morse theory is presented and is shown to lead to a classification of all possible types of flame surface topology. A similar mathematical approach is shown to provide insight into the behaviour of the surface density function (SDF) and the displacement speed in the vicinity of flame pinch-off and pocket burnout events. DNS data for a pair of colliding premixed turbulent hydrogen–air flames is used to identify and locate topological points of interest and to determine their frequencies of occurrence on the flame surface. Further analysis of the dataset is carried out to evaluate terms of the SDF balance equation and the displacement speed in the presence of flame–flame interactions. Considerable insight is gained into the underlying mechanisms of flame propagation.

Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-030-44718-2_1

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DOI: 10.1007/978-3-030-44718-2_1

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