醇类全局和局部湍流预混火焰特性的实验研究

2019/07/23   下载量： 1 次

方案摘要

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应用领域 能源/新能源
检测样本 煤炭
检测项目
参考标准 暂无

采用LaVision公司的ImagerE-lite相机，图像增强器IRO搭建了一套OH平面激光诱导荧光测量系统，并利用该系统对醇类全局和局部湍流预混火焰特性进行了实验研究。

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    Turbulent premixed flame characteristics are significant in technically relevant combustion processes. The here investigated fuels, belonging to the group of alcohols, are situated among the currently discussed biogenic fuels, which shall contribute to the emission reduction within the traffic sector. The aim of this experimental study is to discuss local and global flame characteristics to identify differences of the alcohols methanol, ethanol, 2-propanol and 2-butanol. The well-studied fuel methane is used as reference. All flames are stabilized on the novel Temperature Controlled Piloted Jet Burner (TCPJB), which incorporates an annular pilot flame and an air coflow. First, blow off Reynolds numbers for the different fuels are compared. Secondly, comparisons of CL images reveal differences in the global appearance of the flames. To detect the flame front and subsequently calculate the flame surface density (Σ) for varying bulk Reynolds (bulk Re) and equivalence ratios (ϕ), Planar Laser Induced Fluorescence (PLIF) of the OH molecule is used. The OH-PLIF images reveal significant differences between the fuels in the magnitude and distribution of Σ.

上一篇 在一个双稳湍流涡旋火焰中，对间歇性动态的时间-频率定位
下一篇 氢-空气湍流贫预混低旋流射流火焰直接燃烧噪声特性

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北京欧兰科技发展有限公司
金牌会员 丨 第17年
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