Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 14-24 |
| Number of pages | 11 |
| Journal | Combustion and Flame |
| Volume | 156 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2009 Jan |
Bibliographical note
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.
Keywords
- Droplet inter-space distance
- Droplet interaction
- Oxygen mole-fraction
ASJC Scopus subject areas
- General Chemistry
- General Chemical Engineering
- Fuel Technology
- Energy Engineering and Power Technology
- General Physics and Astronomy