Journal ArticleDOI
Reaction rates in diffusion flames
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TLDR
In this article, a transformation of the species conservation equations is used to analyse experimental data on laminar diffusion flames to obtain chemical reaction rates, using only composition and temperature measurements, the velocity field not being required.About:
This article is published in Combustion and Flame.The article was published on 1977-01-01. It has received 213 citations till now. The article focuses on the topics: Diffusion flame & Diffusion (business).read more
Citations
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Journal ArticleDOI
Laminar diffusion flamelet models in non-premixed turbulent combustion
TL;DR: In this paper, the steady laminar counterflow diffusion flame exhibits a very similar scalar structure as unsteady distorted mixing layers in a turbulent flow field, and the conserved scalar model is interpreted as the most basic flamelet structure.
Journal ArticleDOI
Modeling of nitrogen oxides formation and destruction in combustion systems
Scott C. Hill,L. Douglas Smoot +1 more
TL;DR: A review of modeling of NOX reactions in combustion systems, with an emphasis on coal-fired systems, including current NO X control technologies, NO X reaction processes, and techniques to calculate chemical kinetics in turbulent flames are reviewed in this article.
Journal ArticleDOI
Counterflow diffusion flames
TL;DR: Laminar counterflow diffusion flames are generally referred to as the pure diffusion flame as discussed by the authors, and they can be classified into four types: (i) counterflow between two opposed jets, (ii) flat, counter-flow diffusion flame between two matrix burners, (iii) counter flow diffusion flame in the forward stagnation region of a spherical or hemispherical porous burner, and (iv) the counterflow diffuser flame in a cylindrical porous burner.
Journal ArticleDOI
The structure of turbulent nonpremixed flames
TL;DR: In this article, the authors examined flamelet theories in the context of turbulent non-premixed combustion and found that the criterion requiring that the reaction zone be thinner than the Kolmogoroff length scale is violated in many of the flames of interest, particularly away from the nozzle in jet flames and in recirculating flows.
Journal ArticleDOI
Mixing, transport and combustion in sprays
TL;DR: In this article, a review of recent advances concerning analysis of dilute sprays and drop/turbulence interactions is presented, where a stochastic separated flow (SSF) method has been developed, which treat both finite interphase transport rates and dispersed phase (drop)/turbulent interactions using random-walk computations for the dispersed phase.
References
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Journal ArticleDOI
Turbulent jet diffusion flames
TL;DR: In this paper, the authors discuss the theoretical basis for diffusion flame analysis, with its implications on diffusion flame structure, and the limitations on the use of the two main reaction models, and address the question of the computation of the velocity and scalar fields focusing on the modeling of the turbulence under conditions of fluctuating and spatially varying density.
Journal ArticleDOI
The Structure of Diffusion Flames
TL;DR: In this paper, a theory for the mixing and chemical reaction of two streams of fluid is developed for unsteady laminar and for turbulent flow, and a new expression is derived for the instantaneous reaction rate of any species Wi = −pD(ξ)2Yi/dξ2 where ξ is a conserved scalar.
Book ChapterDOI
Recent Advances in Theoretical Descriptions of Turbulent Diffusion Flames
TL;DR: The theoretical analysis of the structure of a laminar diffusion flame in a shear flow is reviewed in this paper, with emphasis on the critical Damkohler number required for extinction.