Characteristics of soot formation and decomposition in turbulent diffusion flames

Nishida, Osami; Muköhara, Seiya

doi:10.1016/0010-2180(82)90106-7

Cited by 26 publications

(28 citation statements)

References 7 publications

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“…Thus, these results are required as an input for the radiation sources in the RTE. Note that these results showed a very good agreement with the experiment of [7], for details see Paul et al [10].…”

Section: Resultssupporting

confidence: 84%

“…It can be seen that the incident radiation obtained by using the most lower order approximation, S 2 , of the DOM diverges little bit from those with the higher orders. On the other hand the results of the higher order approximations (S 4 , S 6 and S 8 ) converge together, proving the accuracy in the predictions of radiative transfer in the present model, which is very good despite the fact that no direct comparison with experimental data was possible to make because the radiation measurement was not performed by Nishida and Mukohara [7] in the flame. In addition, the axial centreline profiles of G show that they increase towards the downstream of the combustor as the soot volume fraction as well as the flame temperature (see Fig.…”

Section: Resultssupporting

confidence: 61%

“…1, for the experimental details see Nishida and Mukohara [7]. Gaseous propane (C 3 H 8 ) is injected through the circular nozzle of an internal diameter of 2mm at the centre of the combustor inlet while the preheated air with an averaged velocity of 0.96ms −1 and temperature of 773K is supplied through the circular inlet of 115mm internal diameter into the 350mm long combustion chamber.…”

Section: Introductionmentioning

confidence: 99%

“…The overall equivalence ratio is kept at 1.67 so that burning occurs in a fuel-rich nonpremixed combustion mode. The average fuel velocity measured by [7] at the inlet was 30ms −1 , which corresponds to a flow Reynolds number of 13, 000 in the computation. To the best of authors' knowledge, this is the first time that a detailed investigation on the radiative transfer from the propane-air turbulent flame inside this combustion chamber is performed by combining DOM with LES.…”

Section: Introductionmentioning

confidence: 99%

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Radiative heat transfer during turbulent combustion process

Paul

2010

International Communications in Heat and Mass Transfer

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We investigate the radiative heat transfer in a co-flowing turbulent nonpremixed propane-air flame inside a three-dimensional cylindrical combustion chamber. The radiation from the luminous flame, which is due to the appearance of soot particles in the flame, is studied here, through the balance equation of radiative transfer which is solved by the Discrete Ordinates Method (DOM) coupling with a Large Eddy Simulation (LES) of the flow, temperature, combustion species and soot formation. The effect of scattering is ignored as it is found that the absorption dominates the radiating medium. Assessments of the various orders of DOM are also made and we find that the results of the incident radiation predicted by the higher order approximations of the DOM are in good agreement.

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Section: Resultssupporting

confidence: 84%

Section: Resultssupporting

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Radiative heat transfer during turbulent combustion process

Paul

2010

International Communications in Heat and Mass Transfer

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“…The non-premixed elevated-pressure methane, and preheated-air propane, flames considered in the present study were experimentally reported respectively by Brookes and Moss [4] and Nishida and Mukohara [21]. The methane-air flames [4] were studied Table 1.…”

Section: Experimentally Investigated Flamesmentioning

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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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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Effect of chemical reactions and the process of mixing on the concentration of carbon monoxide and hydrocarbons in a turbulent diffusion flame

Buriko¹,

Kuznetsov²

1987

Combust Explos Shock Waves

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Characteristics of soot formation and decomposition in turbulent diffusion flames

Cited by 26 publications

References 7 publications

Radiative heat transfer during turbulent combustion process

Radiative heat transfer during turbulent combustion process

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

Effect of chemical reactions and the process of mixing on the concentration of carbon monoxide and hydrocarbons in a turbulent diffusion flame

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