Asymptotic analysis with reduced chemistry for the burning of n-heptane droplets

Card, J.M.; Williams, F. A.

doi:10.1016/0010-2180(92)90099-b

Cited by 28 publications

(5 citation statements)

References 10 publications

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“…This fact yields the necessity to emphasize more on the role of chemical reactions. Although reduced reaction models are applied for the analysis of the burning process (Card and Williams, 1992), none of such models has been tried for the ignition process of n-heptane droplets.…”

Section: Introductionmentioning

confidence: 99%

Two Stage Ignition ofn-Heptane Isolated Droplets

Tanabe¹,

Kono²,

Sato³

et al. 1995

Combustion Science and Technology

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ARSTRAff-Experimental and theoretical studies on the spontaneous ignition proccu of isolated fuel droplets were carried o u t Tiedependent ttmperature fields around the igniting droplets wcrc observed by interferometry so that two step temperature rise can be detected. Some experiments a n pcdomed under microgravity to obtain reference data. Induction times arc examined as a function of ambient temperature As a result a zero temperature codficient region h found, whicb is equivalent to the NTC (negative tempraturc coefficient) region for the ignition of premixed A numerical model is developed applying a simplified chemical reaction model tbet includts 4 e low and the high tempraturc reactions The model is able to rcprodua the two step temperature rise and the roles of the two kinds of reactions on the ignition praccu up to the establishment of a difusion fiame around the droplet are examined.

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Section: Introductionmentioning

confidence: 99%

Two Stage Ignition ofn-Heptane Isolated Droplets

Tanabe¹,

Kono²,

Sato³

et al. 1995

Combustion Science and Technology

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“…The inputs required for calculating w are provided here by rate-ratio asymptotics with the threestep reduced approximation having the ordering _5< u < e < 1. Since details of the method may be found in earlier investigations [11,[17][18][19][20], we present only the results of the analysis and exhibit r the formulas needed to obtain the necessary inputs.…”

Section: Summary Of Asymptotic Analysismentioning

confidence: 99%

Influences of flame-vortex interactions on formation of oxides of nitrogen in curved methane-air diffusion flamelets

Card

Rydén

Williams

1996

Combustion and Flame

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“…Several investigations dealing with n-heptane flames have been reported in recent years. The combustion of n-C 7 H 16 has been investigated with reduced chemical mechanism for analyses of burning velocities [1], the structure and extinction of nonpremixed flames [2][3][4], and liquid-pool flames [5][6][7]. Semidetailed and detailed chemistry models have also been used to analyze n-C 7 H 16 combustion in various flame configurations [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation of n-Heptane/Air Counterflow Nonpremixed Flame Structure

Berta¹,

Puri

Granata³

et al. 2008

Journal of Propulsion and Power

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An experimental and numerical investigation of prevaporized n-heptane nitrogen-diluted nonpremixed flames is reported. The major objective is to provide well-resolved experimental data regarding the structure and emission characteristics of these flames, including profiles of major species (N 2 , O 2 , C 7 H 16 , CO 2 , CO, H 2), hydrocarbon intermediates (CH 4 , C 2 H 4 , C 2 H 2 , C 3 H x), and soot precursors (C 6 H 6). A counterflow flame configuration is employed, because it provides a nearly one-dimensional flat flame that facilitates both the detailed measurements and simulations using comprehensive chemistry and transport models. The measurements are compared with predictions using a detailed n-heptane oxidation mechanism that includes the chemistry of NO x and polycyclic aromatic hydrocarbon formation. The measurements are compared with predictions using a detailed n-heptane oxidation mechanism that includes the chemistry of NO x and polycyclic aromatic hydrocarbon formation. Measurements and predictions exhibit excellent agreement for temperature and major species profiles (N 2 , O 2 , n-C 7 H 16 , CO 2 , CO, and H 2), reasonably good agreement for intermediate species (CH 4 , C 2 H 4 , C 2 H 2 , and C 3 H x), but significant differences with respect to benzene profiles. Consequently, the benzene submechanism was synergistically improved using pathway analysis and measured benzene profiles.

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Asymptotic analysis with reduced chemistry for the burning of n-heptane droplets

Cited by 28 publications

References 10 publications

Two Stage Ignition ofn-Heptane Isolated Droplets

Two Stage Ignition ofn-Heptane Isolated Droplets

Influences of flame-vortex interactions on formation of oxides of nitrogen in curved methane-air diffusion flamelets

Experimental and Numerical Investigation of n-Heptane/Air Counterflow Nonpremixed Flame Structure

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