The anchoring of gaseous jet diffusion flames in stagnant air

Kurdyumov, Vadim N.; Fernández-Tarrazo, Eduardo; Liñán, A.

doi:10.1016/s1270-9638(02)01170-7

Cited by 8 publications

(4 citation statements)

References 12 publications

(14 reference statements)

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“…With the scales of this NS region, the incoming air and fuel flows are seen as uniform shear flows at the temperature of the wall, intermediate between those of the two streams T 0 and T A . The numerical integrations for decreasing values of D N exhibit edge flames (Fernández et al 2000, Kurdyumov et al 2002 that separate progressively from the injector wall, giving overall heat-transfer rates to the wall that decrease rapidly as the value (D N ) c is approached. It is worth noting that the structure of the edge flames that form in the near wake of the injector is similar to that of the edge flames emerging in flame spread over solid fuels , Higuera 2002, Tiz ón et al 1999.…”

Section: The Anchoring Region Of Jet Diffusion Flamesmentioning

confidence: 99%

“…To calculate (D N ) c , and the diffusion-flame edge structure for D N > (D N ) c , one must solve the locally two-dimensional and steady form of the reacting NS equations nondimensionalized with the scales δ N and u N (Fernández et al 2000, Kurdyumov et al 2002. With the scales of this NS region, the incoming air and fuel flows are seen as uniform shear flows at the temperature of the wall, intermediate between those of the two streams T 0 and T A .…”

Section: The Anchoring Region Of Jet Diffusion Flamesmentioning

confidence: 99%

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Ignition, Liftoff, and Extinction of Gaseous Diffusion Flames

Liñán¹,

Vera²,

Sánchez

2015

Annu. Rev. Fluid Mech.

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This review uses as a vehicular example the jet-flame configuration to examine some phenomena that emerge in nonpremixed gaseous combustion as a result of the interaction between the temperature-sensitive chemical reaction, typical of combustion, and the convective and diffusive transport. These include diffusion-controlled flames, edge flames and their role in flame attachment, triple flames and their role as ignition fronts, and strain-induced extinction, including flame-vortex interactions. The aim is to give an overall view of the fluid dynamics of nonpremixed combustion and to review the most relevant contributions.

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Section: The Anchoring Region Of Jet Diffusion Flamesmentioning

confidence: 99%

Section: The Anchoring Region Of Jet Diffusion Flamesmentioning

confidence: 99%

Ignition, Liftoff, and Extinction of Gaseous Diffusion Flames

Liñán¹,

Vera²,

Sánchez

2015

Annu. Rev. Fluid Mech.

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“…The analysis of the structure of the flow in other flow configurations at large Reynolds numbers, where the air and fuel boundary layers merge at the splitter plate, is more complex, involving for nonnegligible coflow of air a triple-deck structure. This analysis, of more relevance for the description of the attachment region of the diffusion flames in other flow configurations, has been the subject of previous work by the authors [7,8].…”

mentioning

confidence: 93%

Liftoff and blowoff of a diffusion flame between parallel streams of fuel and air

Fernández-Tarrazo¹,

Vera

Liñán

2006

Combustion and Flame

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“…Manuscript received July 3. Lee and Tien [26] and Kurdyumov et al [27][28][29] conducted numerical simulations and reported the significant role of the flame-wall heat transfer interaction on boundary layer FB. 2013; published online October 28, 2013.…”

Section: Introductionmentioning

confidence: 99%

Influence of Burner Material, Tip Temperature, and Geometrical Flame Configuration on Flashback Propensity of H2-Air Jet Flames

Duan¹,

Shaffer²,

McDonell

et al. 2013

Journal of Engineering for Gas Turbines and Power

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Flashback is a key operability issue for low emission premixed combustion systems operated on high hydrogen content fuels. Frevious work investigated fuel composition impacts on flasliback propensity and found that burner tip temperature was important in correlating flashback data in premixed jet flames. An enclosure around tiie jet flame was found to enhance the flame-burner rim interaction. The present study further addresses these issues using a jet burner with various geometric configurations and interchangeable materials. Systematic studies addressing the quantitative influence of various parameters such as tip temperature, burner material, enclosure size, and burner diameter on flashback propensity were carried out. A comprehensive overview of the flashback limits for all conditions tested in the current study as well as those published previously is given. Tlie collective results indicate that the burner materials, tip temperature, and flame confinement play significant roles for flashback propensity and thus help explain previous scatter in flashback data. Furthermore, the present work indicates that the upstream flame propagation during flashback is affected by the burner material. The material with lower thermal conductivity yields larger flashback propensity but slower flame regression inside the tube. These observations can be potentially exploited to minimize the negative impacts of flashback in practical applications.

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The anchoring of gaseous jet diffusion flames in stagnant air

Cited by 8 publications

References 12 publications

Ignition, Liftoff, and Extinction of Gaseous Diffusion Flames

Ignition, Liftoff, and Extinction of Gaseous Diffusion Flames

Liftoff and blowoff of a diffusion flame between parallel streams of fuel and air

Influence of Burner Material, Tip Temperature, and Geometrical Flame Configuration on Flashback Propensity of H2-Air Jet Flames

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