Large-eddy simulation of spray combustion in a gas turbine combustor
Large-eddy simulation of spray combustion in a gas turbine combustor
复制标题
DOI：
10.1016/j.combustflame.2013.07.016
复制
发表时间：
2014-01-01
影响因子：
4.4
通讯作者：
Vogiatzaki, K.
中科院分区：
文献类型：
--
作者：
Jones, W. P.;Marquis, A. J.;Vogiatzaki, K.
本文描述了一个全面的研究结果的湍流混合，燃料喷雾分散和蒸发和燃烧的燃气轮机燃烧室几何形状（DLR通用单扇区燃烧室）的大涡模拟（LES）的援助。采用欧拉描述的连续相，再加上拉格朗日制定的分散相。亚网格尺度（sgs）的概率密度函数方法结合随机场解方法被用来考虑sgs的顺磁化学相互作用。随机模型被用来描述sgs波动对液滴扩散和蒸发的影响。两种不同的测试情况下，涉及反应和非反应条件进行了模拟。底层流场的模拟是令人满意的平均统计和火焰的结构被准确地捕捉。详细的喷雾模拟也提出了与测量结果相比，燃料喷雾模型再现测得的索特平均直径（SMD）和液滴的速度准确。(C)2013燃烧研究所爱思唯尔公司出版。All rights reserved.
The paper describes the results of a comprehensive study of turbulent mixing, fuel spray dispersion and evaporation and combustion in a gas-turbine combustor geometry (the DLR Generic Single Sector Combustor) with the aid of Large Eddy Simulation (LES). An Eulerian description of the continuous phase is adopted and is coupled with a Lagrangian formulation of the dispersed phase. The sub-grid scale (sgs) probability density function approach in conjunction with the stochastic fields solution method is used to account for sgs turbulence-chemistry interactions. Stochastic models are used to represent the influence of sgs fluctuations on droplet dispersion and evaporation. Two different test cases are simulated involving reacting and non-reacting conditions. The simulations of the underlying flow field are satisfying in terms of mean statistics and the structure of the flame is captured accurately. Detailed spray simulations are also presented and compared with measurements where the fuel spray model is shown to reproduce the measured Sauter Mean Diameter (SMD) and the velocity of the droplets accurately. (C) 2013 The Combustion Institute. Published by Elsevier Inc. All rights reserved.