Author: Arup Barua
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: J. Lahaye
Publisher: Springer
ISBN: 9781468444650
Category : Science
Languages : en
Pages : 433

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Our interest in Mulhouse for carbon black and soot began some 30 years ago when J.B. Donnet developed the concept of surface chemistry of carbon and its involvement in interactions with gas, liquid and solid phases. In the late sixties, we began to study soot formation in pyrolytic systems and later on in flames. The idea of organ1z1ng a meeting on soot formation originated some four or five years ago, through discussions among Professor J.B. Howard, Dr. A. D'Alessio and ourselves. At that time the scientific community was becoming aware of the necessity to strictly control soot formation and emission. Being involved in the study of surface properties of carbon black as well as of formation of soot, we realized that the combustion community was not always fully aware of the progress made by the physical-chemists on carbon black. Reciprocally, the carbon specialists were often ignoring the research carried out on soot in flames. One objective of this workshop was to stimulate discussions between these two scientific communities. During the preparation of the meeting, and especially during the review process by the Material Science Committee of the Scientific Affairs Division of N.A.T.O. the toxicological aspect emerged as being an important component to be addressed during the workshop. To reflect these preoccupations we invited biologists, physical chemists and engineers, all leaders in their field. The final programme is a compromise of the different aspects of the subject and was divided in five sessions.

Author: Keunchul Lee
Publisher:
ISBN:
Category : Combustion
Languages : en
Pages : 276

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Author: Ahmet Emre Karatas
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: Richard L. Axelbaum
Publisher:
ISBN:
Category :
Languages : en
Pages : 510

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Author: Exxon Research and Engineering Company. Government Research Laboratories
Publisher:
ISBN:
Category : Combustion
Languages : en
Pages : 148

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Author: Peter Bradford Sunderland
Publisher:
ISBN:
Category :
Languages : en
Pages : 262

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Author:
Publisher:
ISBN:
Category : Railroads
Languages : en
Pages : 5

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Soot volume fraction (f[subscript sv]) is measured quantitatively in a laminar diffusion flame at elevated pressures up to 25 atmospheres as a function of fuel type in order to gain a better understanding of the effects of pressure on the soot formation process. Methane and ethylene are used as fuels; methane is chosen since it is the simplest hydrocarbon while ethylene represents a larger hydrocarbon with a higher propensity to soot. Soot continues to be of interest because it is a sensitive indicator of the interactions between combustion chemistry and fluid mechanics and a known pollutant. To examine the effects of increased pressure on soot formation, Laser Induced Incandescence (LII) is used to obtain the desired temporally and spatially resolved, instantaneous f[subscript sv] measurements as the pressure is incrementally increased up to 25 atmospheres. The effects of pressure on the physical characteristics of the flame are also observed. A laser light extinction method that accounts for signal trapping and laser attenuation is used for calibration that results in quantitative results. The local peak f[subscript sv] is found to scale with pressure as p[superscript 1.2] for methane and p[superscript 1.7] for ethylene.

Author: Guozheng Lin
Publisher:
ISBN:
Category : Flame
Languages : en
Pages : 568

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