Investigation on weakly curved counterflow diffusion flames at infinitely fast chemistry
Vempati, Naga Saras Chandan
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VEMPATI-THESIS-2017.pdf
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https://hdl.handle.net/2142/99404
Description
Title
Investigation on weakly curved counterflow diffusion flames at infinitely fast chemistry
Author(s)
Vempati, Naga Saras Chandan
Issue Date
2017-12-14
Director of Research (if dissertation) or Advisor (if thesis)
Matalon, Moshe
Department of Study
Mechanical Sci & Engineering
Discipline
Mechanical Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
M.S.
Degree Level
Thesis
Date of Ingest
2018-03-13T15:49:09Z
Keyword(s)
Combustion
Modeling
Counterflow diffusion flames
Abstract
We investigate the behavior of a counterflow diffusion flame subject to a flow field comprising of a first order potential flow superimposed on a weak second order correction to the potential flow. An Arrhenius one-step irreversible reaction model at infinite Damkohler number and constant density is considered. This simplified model is then used to study the distribution of fuel and oxidizer mass fractions, shape of the reaction sheet, and the temperature field. The temperature of the reaction sheet for the unity Lewis numbers is constant and is shown to be equal to the adiabatic flame temperature. The temperature of the reaction for the unequal Lewis number case is also shown to be constant and is equal to the stoichiometric flame temperature. In addition, we also show that the reaction sheet always takes the shape of the seperatrix, independent of fuel-oxidizers Lewis numbers and mixture strength.
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VEMPATI-THESIS-2017.pdf
