Soot production in axisymmetric laminar diffusion flames at pressures from one to ten atmospheres

Flower, W. L.; Bowman, Craig T.

doi:10.1016/s0082-0784(88)80342-4

Cited by 100 publications

(72 citation statements)

References 15 publications

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“…The numerical predictions from this study demonstrate an increase of soot production with increased pressure, in line with experimental evidence [2][3][4]. However, there has been no comprehensive explanation regarding the mechanisms responsible for such an increase.…”

Section: Methane-air Elevated Pressure Flamessupporting

confidence: 84%

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Conditional moment closure modelling of soot formation in turbulent, non-premixed methane and propane flames

Woolley

Fairweather

Yunardi

2009

Fuel

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Published paperPresented are results obtained from the incorporation of a semi-empirical soot model into a first-order conditional moment closure (CMC) approach to modelling turbulent, non-premixed methane-and propane-air flames. Soot formation is determined via the solution of two transport equations for soot mass fraction and particle number density, with acetylene and benzene employed as the incipient species responsible for soot nucleation, and the concentrations of these calculated using a detailed gas-phase kinetic scheme involving 70 species. The study focuses on the influence of differential diffusion of soot particles on soot volume fraction predictions. The results of calculations are compared with experimental data for atmospheric and 3 atmosphere methane flames, and propane flames with air preheated to 323 K and 773 K. Overall, the study demonstrates that the model, when used in conjunction with a representation of differential diffusion effects, is capable of accurately predicting soot formation in the turbulent non-premixed flames considered.

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Section: Methane-air Elevated Pressure Flamessupporting

confidence: 84%

“…Most experimental studies of sooting processes to date have focussed primarily on laminar flames at atmospheric pressure and thus available data on soot levels in turbulent non-premixed flames at elevated pressures is very limited. Measurements in laminar [2,3] and turbulent [4] non-premixed flames have…”

Section: Introductionmentioning

confidence: 99%

Conditional moment closure modelling of soot formation in turbulent, non-premixed methane and propane flames

Woolley

Fairweather

Yunardi

2009

Fuel

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“…Another advantage of the laminar coflowing jet diffusion flame configuration is that it has been widely used to study the soot-formation properties of diffusion fames (see Refs. [4][5][6][7][8]). …”

Section: Motivatedmentioning

confidence: 99%

Hydrodynamic suppression of soot formation in laminar coflowing jet diffusion flames

Dai

Faeth

2000

Proceedings of the Combustion Institute

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“…Although high-pressure combustion of hydrocarbon fuels is widely applied in most practical transportation and propulsion devices (e.g., aircraft gas turbines, diesel engines and rocket engines) [1][2][3][4][5][6], our understanding of high-pressure combustion is relatively limited. One of the major causes is the non-trivial nature of tractable high-pressure combustion experiments [2,3] and simulations [1,4].…”

Section: Introductionmentioning

confidence: 99%

“…One of the major causes is the non-trivial nature of tractable high-pressure combustion experiments [2,3] and simulations [1,4]. In the practical high-pressure devices, the high level of intermittency due to turbulent motion and relatively short residence time involved in these flames is not always suitable for experimental measurements of combustion [1,4].…”

Section: Introductionmentioning

confidence: 99%

Skeletal mechanism modelling of n -heptane/oxygen laminar coflow flame structure at pressures

Wei

2015

Fuel

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h i g h l i g h t sThe skeletal mechanism of n-heptane combustion was developed and validated. n-Heptane/oxygen were investigated by the developed skeletal mechanism. The maximum soot volume fraction increases as f v,max / P 2 with increasing pressure.n-Heptane/oxygen flame height decreased with increasing pressure. a r t i c l e i n f o b s t r a c tA skeletal reaction mechanism of n-heptane combustion is developed and validated. The axisymmetric laminar co-flow diffusion flames of n-heptane/oxygen are simulated using the skeletal mechanism at elevated pressure, and the chemical reaction paths in three reaction zones of flame are presented. The n-heptane/oxygen flame height decreases from 8.8 to 5.6 mm with the increase of pressure from 0.1 to 2 MPa, and the Roper's formulation is not expected for the prediction of n-heptane/oxygen flame height.The maximum volume fraction of soot increases with pressure as f v,max / P 2 . The ratio of flame height to soot oxidation length of the n-heptane/oxygen flames is close to unity (1.037-1.121).

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Soot production in axisymmetric laminar diffusion flames at pressures from one to ten atmospheres

Cited by 100 publications

References 15 publications

Conditional moment closure modelling of soot formation in turbulent, non-premixed methane and propane flames

Conditional moment closure modelling of soot formation in turbulent, non-premixed methane and propane flames

Hydrodynamic suppression of soot formation in laminar coflowing jet diffusion flames

Skeletal mechanism modelling of n -heptane/oxygen laminar coflow flame structure at pressures

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