Topic
Diffusion flame
About: Diffusion flame is a research topic. Over the lifetime, 9266 publications have been published within this topic receiving 233522 citations.
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TL;DR: In this paper, the authors evaluate current models for flame stabilization in lifted, turbulent CH4-jet flames and conclude that local stoichiometry, and not scalar dissipation, is the primary factor controlling flame stability.
105 citations
TL;DR: In this paper, an analysis is developed for predicting extinction of the diffusion flame that is established when an oxidizing gas flows about the nose of a vaporizing fuel body, using the limit of a large ratio of the activation energy to the thermal energy at the flame for the overall combustion process.
105 citations
TL;DR: In this paper, the effects of simultaneous dilution and preheat of reactants by mixing with hot combustion products are examined in terms of the stability of turbulent counterflow flames, and it is shown that flames of equivalence ratio as lean as 0.2 can not be extinguished by straining.
105 citations
TL;DR: The effect of combustion on the internal recirculation zone (IRZ) formed in the vicinity of swirl stabilized burners is studied in this paper, where an LDA technique is used for velocity and turbulence measurement while sampling probes are used for gas composition and temperature measurements.
105 citations
TL;DR: In this paper, a laminar diffusion flame with a single plane vortex and with a stretched line vortex is examined with the aim of determining the flame configuration and the augmentation to the reactant consumption rate resulting from the interaction.
Abstract: The time dependent interaction of a laminar diffusion flame with a single plane vortex and with a stretched line vortex is examined with the aim of determining the flame configuration and the augmentation to the reactant consumption rate resulting from the interaction. Elements
of the resulting curved flame sheets behave essentially as isolated flames until the neighboring flame sheets become so closely spaced that they interact and consume the intervening reactant. This process creates a core of combustion products with external isolated flame surfaces. The augmentation of the reactant consumption rate results both from the local straining of the flame in its own plane and from the overall increase in flame surface area. Three examples are treated in detail. The first is the plane problem in which an initially straight flame is distorted by a vortex. In the second, the situation is similar except that the problem is expanded to three dimensions
and the vortex line is being stretched along its own axis. Finally, the effects of the density change resulting from the heat release are examined.
105 citations