Pressure Effects in Droplet Combustion of Miscible Binary Fuels
作者:
M. MIKAMI,
O. HABARA,
M. KONO,
J. SATO,
D. L. DIETRICH,
F. A. WILLIAMS,
期刊:
Combustion Science and Technology
(Taylor Available online 1997)
卷期:
Volume 124,
issue 1-6
页码: 295-309
ISSN:0010-2202
年代: 1997
DOI:10.1080/00102209708935649
出版商: Taylor & Francis Group
关键词: Droplet combustion;binary fuel;high pressure;gas dissolution;critical mixing condition
数据来源: Taylor
摘要:
The objective of this research is to improve understanding of the combustion of binary fuel mixtures in the vicinity of the critical point. Fiber-supported droplets of mixtures of w-heptane and n-hexadecane, initially 1 mm in diameter, were burned in room-temperature air at pressures from 1 M Pa to 6 M Pa under free-fall microgravity conditions. For most mixtures the total burning time was observed to achieve a minimum value at pressures well above the critical pressure of either of the pure fuels. This behavior is explained in terms of critical mixing conditions of a ternary system consisting of the two fuels and nitrogen. The importance of inert-gas dissolution in the liquid fuel near the critical point is thereby re-emphasized, and nonmonotonic dependence of dissolution on initial fuel composition is demonstrated. The results provide information that can be used to estimate high-pressure burning rates of fuel mixtures.
点击下载:
PDF (350KB)
返 回