Effects of ambient pressure, gas temperature and combustion reaction on droplet evaporation
Effects of ambient pressure, gas temperature and combustion reaction on droplet evaporation
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DOI：
10.1016/j.combustflame.2013.09.009
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发表时间：
2014-02-01
影响因子：
4.4
通讯作者：
Komori, Satoru
中科院分区：
文献类型：
--
作者：
Kitano, Tomoaki;Nishio, Jun;Komori, Satoru
The effects of ambient pressure, initial gas temperature and combustion reaction on the evaporation of a single fuel droplet and multiple fuel droplets are investigated by means of three-dimensional numerical simulation. The ambient pressure, initial gas temperature and droplets' mass loading ratio, ML, are varied in the ranges of 0.1-2.0 MPa, 1000-2000 K and 0.027-0.36, respectively, under the condition with or without combustion reaction. The results show that both for the conditions with and without combustion reaction, droplet lifetime increases with increasing the ambient pressure at low initial gas temperature of 1000 K, but decreases at high initial gas temperatures of 1500 K and 2000 K, although the droplet lifetime becomes shorter due to combustion reaction. The increase of ML and the inhomogeneity of droplet distribution due to turbulence generally make the droplet lifetime longer, since the high droplets' mass loading ratio at local locations causes the decrease of gas temperature and the increase of the evaporated fuel mass fraction towards the vapor surface mass fraction. (C) 2013 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
