Skeletal mechanism modeling of n-heptane oxygen laminar coflow flame structure at pressures
Skeletal mechanism modeling of n-heptane oxygen laminar coflow flame structure at pressures
复制标题
压力下正庚烷氧层流共流火焰结构的骨架机制建模
DOI：
10.1016/j.fuel.2015.09.013
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发表时间：
2015
期刊：
影响因子：
7.4
通讯作者：
Xiaolin Wei
中科院分区：
文献类型：
--
作者：
Sen Li;Xiaolin Wei
提出并验证了正庚烷燃烧的骨架反应机理。采用骨架机制模拟了正庚烷/氧气轴对称层流并流扩散火焰，给出了火焰3个反应区的化学反应路径。当压力从0.1 MPa增加到2 MPa时，正庚烷/氧气火焰高度从8.8 mm减小到5.6 mm，罗珀公式不能用于正庚烷/氧气火焰高度的预测。碳烟的最大体积分数随压力增大而增大，最大值为Δ fv，最大值为Δ P2。正庚烷/氧气火焰的火焰高度与碳烟氧化长度之比接近于1（1.037-1.121）。
A skeletal reaction mechanism ofn-heptane combustion is developed and validated. The axisymmetric laminar co-flow diffusion flames ofn-heptane/oxygen are simulated using the skeletal mechanism at elevated pressure, and the chemical reaction paths in three reaction zones of flame are presented. Then-heptane/oxygen flame height decreases from 8.8 to 5.6 mm with the increase of pressure from 0.1 to 2 MPa, and the Roper’s formulation is not expected for the prediction ofn-heptane/oxygen flame height. The maximum volume fraction of soot increases with pressure asfv,max∝P2. The ratio of flame height to soot oxidation length of then-heptane/oxygen flames is close to unity (1.037–1.121).