Electric field effects on chemi-ionization in droplet burning
Patyal, Advitya
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https://hdl.handle.net/2142/44132
Description
Title
Electric field effects on chemi-ionization in droplet burning
Author(s)
Patyal, Advitya
Issue Date
2013-05-24T21:51:42Z
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
Keyword(s)
Electric
Electric field
Droplet
Droplet combustion
Diffusion
Diffusion flame
Chemiluminescence
Abstract
The effects of an externally applied field are studied for a single isolated droplet flame under the spherically symmetric 1-D configuration. A reduced 3-step chemical kinetic mechanism is proposed to capture the production and destruction of ions inside the flame, which is then used for conducting analytical and numerical investigations. Large activation energy asymptotics were used to study the flame structure in the absence of the external field. The effect of the electric field is modelled using the Ionic Wind and Ohmic Heating. Furthermore, two distinguished limits of weak and strong field are studied to understand the charge redistribution in both cases. Based on the numerical results, an increase in the mass burning rate is observed with increasing potential. However, maximum flame temperature doesn't seem to be effected with the external field. Ohmic Heating effects are used to explain these observations.
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