Introduction to Combustion

Spalding, D. B.

doi:10.1016/b978-0-08-022106-9.50005-x

Cited by 29 publications

(3 citation statements)

References 20 publications

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“…Furthermore, the flame quenching takes place due to incomplete evaporation of the fuel drops in the convective-diffusion zone of the flame. Nonevaporated fuel drops are evaporated in the region of combustion products that causes secondary ignition of the combustible mixture after a certain time period corresponding to the ignition delay …”

Section: Resultsmentioning

confidence: 99%

Combustion of Foamed Emulsions in the Quenching/Reignition Regime

et al. 2017

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In this paper, we consider the problems of combustion of a foamed emulsion consisting of oxygen bubbles dispersed in the emulsion, which represents a water solution of surfactant with oil drops distributed in it. The interest to study such problems is caused by the perspective of obtaining a new type of fuel based on a water–oil blend as well as by the need to solve ecological issues related to oil spilled on the water surface. At a significant content of water in the combustible foam, an irregular regime of flame propagation can be established that is related to sequential quenching and reignition of the foam. On the basis of experimental research, we study the influence of the magnesium oxide particle fraction, fuel concentration, and tube diameter on the speed of flame propagation in the foamed emulsion in the quenching/reignition regime. It is found that the presence of magnesium oxide particles in the foam leads to an increase in the total burning rate of the foam. A reduction in the tube diameter and the use of a leaner foam favor the onset of the quenching/reignition regime.

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Section: Resultsmentioning

confidence: 99%

Combustion of Foamed Emulsions in the Quenching/Reignition Regime

et al. 2017

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“…According to Spalding D.B. [25], in this case, the combustion zone consists of moles of burned and unburned gas. An essential feature of this model is the fragmentation of these moles into smaller ones due to intense deformation represented in this model by the shear effect of the average velocity gradient.…”

Section:   mentioning

confidence: 99%

“…Thus, the reaction rate has not only the first limit due to kinetics, but also the second limit, often lower, which is determined by the vortex dissipation rate. Spalding [25] proposed the following expression for the reaction rate in high-temperature turbulent flame during the vortex decay:…”

Section:   mentioning

confidence: 99%

Analysis of turbulence model effect on the position of the combustion zone in a swirling flow

Матвиенко

Litvinova

2022

28th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics

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The influence of the turbulent combustion model on the position of the flame zone in a swirling flow is analyzed. Three models of turbulent combustion were analyzed: a model of volumetric combustion, a model of turbulent pulsations, and a model of vortex decay. The research results show that the data of the combustion model controlled by turbulent mixing are in the best agreement with the experimental data.

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Flame stabilization in a lifted non-premixed turbulent hydrogen jet with coaxial air

Yoon

2010

International Journal of Hydrogen Energy

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Introduction to Combustion

Cited by 29 publications

References 20 publications

Combustion of Foamed Emulsions in the Quenching/Reignition Regime

Combustion of Foamed Emulsions in the Quenching/Reignition Regime

Analysis of turbulence model effect on the position of the combustion zone in a swirling flow

Flame stabilization in a lifted non-premixed turbulent hydrogen jet with coaxial air

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