Computational Study of State Relationships for Acetylene-Air Diffusion Flames With Soot Radiation.

Published

August 6, 1995

Author(s)

Z Zhang, O A. Ezekoye

Abstract

Time history effects are suspected to affect the dynamics of soot evolution within heavily sooting non-premixed flames. The majority of soot chemistry calculations have been conducted for steady flame configurations. In this study, the combustion processes for a spherical acetylene-air diffusion flame element are computed using two fundamentally different approaches. In the first case, the state relationship data from experiments are used to specify the major gas species distributions, while in the second case, a finite rate reaction mechanism is used. A simplified soot mechanism which incorporates the effects of soot nucleation, surface growth, oxidation and agglomeration processes is used to specify the soot species evolution. It is found that as the net radiative losses for the diffusion flame element approach zero, the predictions of the state relationships match the results from the finite rate calculations.

Proceedings Title

American Society of Mechanical Engineers (ASME). National Heat Transfer Conference, 1995. Proceedings, 30th. Combustion and Fire Research. Heat Transfer in High Heat-Flux Systems. Volume 2. HTD-Vol 304

Conference Dates

August 6-8, 1995

Conference Location

Portland, OR

Pub Type

Conferences

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Keywords

heat transfer, combustion, fire research, heat flux, diffusion flames, soot, acetylene, kinetics, reaction kinetics, experiments, reaction kinetics

Citation

Zhang, Z. and Ezekoye, O. (1995), Computational Study of State Relationships for Acetylene-Air Diffusion Flames With Soot Radiation., American Society of Mechanical Engineers (ASME). National Heat Transfer Conference, 1995. Proceedings, 30th. Combustion and Fire Research. Heat Transfer in High Heat-Flux Systems. Volume 2. HTD-Vol 304, Portland, OR, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=916990 (Accessed July 27, 2024)