2016
DOI: 10.1007/s10494-016-9724-7
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Abstract: Three-dimensional Direct Numerical Simulations (DNS) in canonical configuration have been employed to study the combustion of mono-disperse droplet-mist under turbulent flow conditions. A parametric study has been performed for a range of values of droplet equivalence ratio φ d , droplet diameter a d and root-mean-square value of turbulent velocity u . The fuel is supplied entirely in liquid phase such that the evaporation of the droplets gives rise to gaseous fuel which then facilitates flame propagation into… Show more

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Cited by 32 publications
(46 citation statements)
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References 46 publications
(139 reference statements)
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“…13b that the dependence between 2 = 2( + ) − 4 2 and is non-linear and the net correlation remains negative. It has already been shown in Table 2 Moreover, −4 2 is responsible for the net negative correlation between 2 and , which is consistent with the findings based on DNS in canonical configurations [64][65][66][67] . As observed earlier for fluiddynamic strain rates, the correlations between additional strain rates and curvature weaken with the increasing distance from the burner exit due to increased turbulent velocity fluctuations.…”
Section: Local Behaviour Of Strain Rates and Sdfsupporting
confidence: 90%
“…13b that the dependence between 2 = 2( + ) − 4 2 and is non-linear and the net correlation remains negative. It has already been shown in Table 2 Moreover, −4 2 is responsible for the net negative correlation between 2 and , which is consistent with the findings based on DNS in canonical configurations [64][65][66][67] . As observed earlier for fluiddynamic strain rates, the correlations between additional strain rates and curvature weaken with the increasing distance from the burner exit due to increased turbulent velocity fluctuations.…”
Section: Local Behaviour Of Strain Rates and Sdfsupporting
confidence: 90%
“…Nevertheless, previous experimental evidence suggests that spray flames can extinguish at global Damköhler numbers that differ from those verified by Abdel-Gayed and Bradley (1985) in gaseous premixed flames (Bradley et al 2014;Cavaliere, Kariuki, Mastorakos 2013;Yuan, Kariuki, Mastorakos 2018). This may occur because of the contribution of droplet-induced stretch due to strain and curvature at the droplet scale (Wacks and Chakraborty 2016). Evidence of this effect has been seen experimentally in bluff-body stabilized spray flames (Cavaliere, Kariuki, Mastorakos 2013) and swirl-stabilized spray flames (Yuan, Kariuki, Mastorakos 2018), where extinction of the flames was observed at values of Karlovitz number between 0.8 and 1.2 for a range of fuels, in comparison to 1.5 for gaseous premixed flames.…”
Section: Introductionmentioning
confidence: 87%
“…By contrast with most literature on spray-flames (for a recent review, see [18]), the current droplets are here fully resolved. This explains why 3-D DNS is hardly affordable for a parametric exhaustive study.…”
Section: Solving the Conservation 2-d Laws For Reactive Media (Dns)mentioning
confidence: 99%