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The Parametric Study of Ignition Process of a Fuel Droplet FREE

[+] Author Affiliations
Jir-Ming Char

The Chinese Air Force Academy, Taiwan, Republic of China

Mao-Yi Fan

The National Cheng Kung University, Taiwan, Republic of China

Paper No. 91-GT-108, pp. V003T06A010; 10 pages
doi:10.1115/91-GT-108
From:
  • ASME 1991 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 3: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations
  • Orlando, Florida, USA, June 3–6, 1991
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7900-9
  • Copyright © 1991 by ASME

abstract

Combustion of a single fuel droplet has long been studied because it establishes the background of understanding the behavior of spray combustion. Ignition is the most critical process during its life time. According to a practical ignition criterion, many parametric studies are performed to examine the effects on ignition under different droplet conditions and different ambient conditions. In addition, two liquid-phase models, infinite conductivity model and conduction limit model, are discussed to demonstrate the heating effect of droplet itself. Dual-period concept is introduced to clarify the dominant factor that governs the ignition process. A special hybrid numerical scheme, ICED-ALE, is used to resolve the difficulties arising from the rapid transition of ignition and regression behavior of a fuel droplet. The numerical predictions show good agreement with the experimental data.

Copyright © 1991 by ASME
Topics: Fuels , Drops , Ignition
This article is only available in the PDF format.

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