Rich spray-flame propagating through a 2D­Lattice of alkane droplets in air

Nicoli, Colette; Denet, Bruno; Haldenwang, Pierre

doi:10.1016/j.combustflame.2015.09.018

Cited by 6 publications

(16 citation statements)

References 37 publications

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“…On the other hand, if the experimentalist fixes the amount of fuel under liquid phase (for instance, the pressure drop in the Wilson chamber at the stage of spray formation), the data are presented with fixed ϕ L [2,3] . In a recent companion paper [4] , we have analyzed the spray dynamics under the first point of view. The present paper considers the second point of view (i.e, fixed ϕ L ), following the same way of the analyses carried out in [2], [3].…”

Section: Introductionmentioning

confidence: 99%

Spray-Flame Dynamics in a Rich Droplet Array

Nicoli

Haldenwang

Denet

2015

Flow Turbulence Combust

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International audienceIn a recent numerical paper (Nicoli et al. Combust. Sci. Technol. vol. 186, pp. 103-119; 2014) [1], a model of isobaric flame propagation in lean sprays has been proposed. The initial state of the monodisperse mists was schematized by a system of individual alkane droplets initially located at the nodes of a face-centered 2D-lattice, surrounded by a saturated mixture of alkane and air. In the present study, the previous model is complemented with an original chemical scheme that allows us to study the combustion of rich alkane/air mixtures

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Section: Introductionmentioning

confidence: 99%

Spray-Flame Dynamics in a Rich Droplet Array

Nicoli

Haldenwang

Denet

2015

Flow Turbulence Combust

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“…The chemical scheme and the implemented numerical methods have 130 largely been described in previous publications [Nicoli et al, 2015[Nicoli et al, , 2017.…”

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confidence: 99%

“…As described in [Nicoli et al, 2015], vaporization, Stefan flow and heat-mass transfers at the liquid-gas interface are solved from the conservation laws and do not require particular sub-models.…”

mentioning

confidence: 99%

“…The spray-flame propagation is governed by the usual set of conservation laws for mass, momenta, energy and species, with the simplest chemical scheme [Nicoli et al, 2015] that allows us to handle a flame propagating through a single-phase medium of heterogeneous composition, where the equivalence ratio varies from ϕ far from the droplets 105 to an unknown value close to the droplets. As described in [Nicoli et al, 2015], vaporization, Stefan flow and heat-mass transfers at the liquid-gas interface are solved from the conservation laws and do not require particular sub-models.…”

mentioning

confidence: 99%

“…The model of spray-flame propagation resorts to the general approach we have used in the contributions [Nicoli et al, 2014[Nicoli et al, , 2015. The initial state of the spray is schematized by a 2D face-centered lattice, at the nodes of which water droplets are posi- tioned.…”

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confidence: 99%

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Premixed flame dynamics in presence of mist

Nicoli

Haldenwang

Denet

2018

Combustion Science and Technology

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The injection of a water spray within an enclosure prone to explo-5 sion is reputed to reduce the risk. This strategy for safety improvement is at the root of numerous experiments that have concluded that premixed flame can be extinguished by a sufficient amount of a water aerosol characterized by suitable droplet sizes. On the other hand, certain experiments seemingly indicate that flame speed promotion 10 can be observed when particular water mists are injected within the premixture.To contribute to shed light upon these less than intuitive observations, we propose to study the propagation of a nearly stoichiometric premixed flame within a 2D-lattice of water droplets. Main parameters 15 of investigation are droplet size and droplet inter-distance (or equivalently, lattice spacing). When the droplet inter-distance is small, the results confirm that a sufficient amount of water quenches combustion. For larger droplet inter-distance, we observe a flame speed enhancement for suitable droplet size. Concomitantly, the flame front folds

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