TY - JOUR
T1 - Interaction of the burning spherical droplets in oxygen-enriched turbulent environment
AU - Cho, Chong Pyo
AU - Kim, Ho Young
AU - Yoon, Sam S.
N1 - Funding Information:
This research was supported by a Korea University Grant (2007). Special thanks is extended to Dr. Scott C. James of Sandia National Laboratories' Thermal/Fluid Science & Engineering Department and an anonymous reviewers for many helpful suggestions that improved the flow and readability of this manuscript.
Copyright:
Copyright 2009 Elsevier B.V., All rights reserved.
PY - 2009/1
Y1 - 2009/1
N2 - Three-dimensional numerical studies on the interaction of vaporizing and burning droplets were conducted to understand the burning characteristics of multiple droplets in a turbulent environment. The burning droplets characteristics, such as lifetime, surface temperature, vaporization, reaction, and burning rate were examined for various oxygen mole-fractions and geometrical arrangements of droplets. Results from a single droplet combustion test were first verified and validated against existing experimental data. Results indicate that turbulent intensity has a moderate effect on droplet burning rate, but not as prominent an effect as the oxygen mole-fraction. At high oxygen mole-fractions, droplet lifetime was short due to enhanced burning. It is shown that evaporation processes of multiple droplets are notably affected by the inter-space distance between droplets both in streamwise and spanwise directions. The burning rate as a function of oxygen mole-fraction and inter-space distance is determined and can be used as a guideline for future studies on spray combustion.
AB - Three-dimensional numerical studies on the interaction of vaporizing and burning droplets were conducted to understand the burning characteristics of multiple droplets in a turbulent environment. The burning droplets characteristics, such as lifetime, surface temperature, vaporization, reaction, and burning rate were examined for various oxygen mole-fractions and geometrical arrangements of droplets. Results from a single droplet combustion test were first verified and validated against existing experimental data. Results indicate that turbulent intensity has a moderate effect on droplet burning rate, but not as prominent an effect as the oxygen mole-fraction. At high oxygen mole-fractions, droplet lifetime was short due to enhanced burning. It is shown that evaporation processes of multiple droplets are notably affected by the inter-space distance between droplets both in streamwise and spanwise directions. The burning rate as a function of oxygen mole-fraction and inter-space distance is determined and can be used as a guideline for future studies on spray combustion.
KW - Droplet inter-space distance
KW - Droplet interaction
KW - Oxygen mole-fraction
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U2 - 10.1016/j.combustflame.2008.10.026
DO - 10.1016/j.combustflame.2008.10.026
M3 - Article
AN - SCOPUS:58149231336
VL - 156
SP - 14
EP - 24
JO - Combustion and Flame
JF - Combustion and Flame
SN - 0010-2180
IS - 1
ER -