부산대학교 도서관

To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.combustflame.2008.10.026 Byline: Chong Pyo Cho (a), Ho Young Kim (b), Sam S. Yoon (b) Keywords: Droplet interaction; Oxygen mole-fraction; Droplet inter-space distance 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. Author Affiliation: (a) Automobile Energy & Environment Research Center, Korea Institute of Energy Research, 71-2 Jangdong, Yuseonggu, Daejeon, 305-343, Republic of Korea (b) Department of Mechanical Engineering, Korea University, Anamdong, 5-Ga, Sungbukgu, Seoul, 136-701, Republic of Korea Article History: Received 3 April 2007; Revised 30 September 2008; Accepted 3 October 2008