Displacement speed statistics in an open turbulent jet spray flame

Malkeson, Sean P.; Ahmed, Umair; d’Auzay, Charles Turquand; Pillai, Abhishek L.; Chakraborty, Nilanjan; Kurose, Ryoichi

doi:10.1016/j.fuel.2020.119242

Cited by 5 publications

(1 citation statement)

References 60 publications

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“…For these reasons, numerical simulations can prove to be effective tools for elucidating such complex two-phase reacting flow problems. Considerable progress has been made on numerical simulation and modelling of two-phase flows over the decades, from the earlier studies by Bray and co-workers [19][20][21] to the more recent ones [e.g., 22 , [23][24][25][26][27][28][29][30][31][32][33][34][35][36][37] , 38] . Modelling and simulation of spray combustion under Diesel engine-like conditions have also been performed [e.g., 39 , [40][41][42][43][44][45][46] , 47] .…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of heat transfer characteristics of spray flames impinging on a wall under CI engine-like conditions

Pillai

Kai

Murata

et al. 2022

Combustion and Flame

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Section: Introductionmentioning

confidence: 99%

Numerical analysis of heat transfer characteristics of spray flames impinging on a wall under CI engine-like conditions

Pillai

Kai

Murata

et al. 2022

Combustion and Flame

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The effects of flame orientation and mean shear on flame stretch in highly turbulent premixed flames using DNS

Tian

Wang

Luo

et al. 2022

Applications in Energy and Combustion Science

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Flame self-interactions in an open turbulent jet spray flame

et al. 2021

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A three-dimensional Direct Numerical Simulation database of an open turbulent jet spray flame representing a laboratory-scale burner configuration has been analysed to investigate flame self interactions (FSIs) in the presence of flow induced shear, to the best of the authors' knowledge, for the first time. The FSI occurrences (i.e. unburned gas mixture pockets (UBGPs), tunnel formations (TFs), tunnel closures (TCs) and burned gas mixture pockets (BGPs)) have been identified across the flame at different axial locations. It has been found that the interplays between turbulence, droplet evaporation and chemistry have a significant influence on the topological nature of the flame surface. Close to the jet exit, the FSI events are found to occur towards the burned gas side of the flame but moving further away from the jet exit there are significant occurrences of FSI events within the flame where increasingly fuel-rich, low Damkӧhler number conditions occur. In this study, the FSI events have been found to be predominantly TFs and TCs, which is consistent with previous analyses of turbulent premixed flames and combustion of droplet-laden mixtures. However, non-negligible occurrences of UBGPs and BGPs are also observed in this case. The results obtained from this analysis have important implications from a modelling perspective where flame topologies have a significant influence on the nature of the flame surface which will, in turn, affect the flame-surface based modelling approaches. Accordingly, the findings of the current analysis may need to be accounted for the development of flame surface-based closures in the context of turbulent spray flames.

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Displacement speed statistics in an open turbulent jet spray flame

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Cited by 5 publications

References 60 publications

Numerical analysis of heat transfer characteristics of spray flames impinging on a wall under CI engine-like conditions

Numerical analysis of heat transfer characteristics of spray flames impinging on a wall under CI engine-like conditions

The effects of flame orientation and mean shear on flame stretch in highly turbulent premixed flames using DNS

Flame self-interactions in an open turbulent jet spray flame

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