Investigation on weakly curved counterflow diffusion flames at infinitely fast chemistry

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.

Name thesis:degree_name

M.S.

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Mechanical Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2018

Author dc:creator

• Vempati, Naga Saras Chandan

Contributors dc:contributor

• Matalon, Moshe

• Combustion
• Modeling
• Counterflow diffusion flames

Statement dc:rights

• Copyright 2017 Naga Saras Chandan Vempati

Language dc:language

en

Handle dc:identifier

http://hdl.handle.net/2142/99404

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/99404