2010
DOI: 10.1016/j.combustflame.2010.01.009
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Abstract: ARTICLE INFO ABSTRACT Keywords: Premixed flames Bunsen flames Numerical and asymptotic analysisNumerical computations and order-of-magnitude estimates are used to describe the tip región of a Bunsen fíame where the fíame departs from a planar fíame at an angle to the incoming fresh gas flow. A single irreversible Arrhenius reaction with high activation energy is assumed. The well-known linear relation between fíame velocity and curvature is recovered in the thermodiffusive limit, when the thermal expansión of … Show more

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Cited by 10 publications
(9 citation statements)
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References 24 publications
(67 reference statements)
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“…For tall flames, such a temperature increase may be brought about by the small but cumulative heating experienced by the fresh gas that flows nearly parallel to the flame before actually entering its preheating region. The effect increases with the inclination of the flame [19] and, for a given flame, it is most pronounced for the gas flowing near the symmetry axis, in line with the results in Fig. 7.…”
Section: Resultssupporting
confidence: 89%
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“…For tall flames, such a temperature increase may be brought about by the small but cumulative heating experienced by the fresh gas that flows nearly parallel to the flame before actually entering its preheating region. The effect increases with the inclination of the flame [19] and, for a given flame, it is most pronounced for the gas flowing near the symmetry axis, in line with the results in Fig. 7.…”
Section: Resultssupporting
confidence: 89%
“…The analysis of [19] for very tall and exothermic flames, (Uo, <9) -> oo, predicts a transition in the structure of the flame tip from round to slender when the value U n /Ui at the tip becomes of the order of the temperature ratio © = Tjj/T u . This analysis may also be tickled to produce a very rough estimate of the temperature increase experienced by the fresh gas that approaches the tip of the flame as AT/(Tb -T u ) = 0(<9 _1 ).…”
Section: Resultsmentioning
confidence: 99%
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