不同氛围下乙烯火焰温度及辐射特性的光学检测及数值模拟  

Optical Detection and Numerical Simulation of Ethylene Flame Temperature and Radiation Characteristics in Different Atmospheres

作　　者：胡多多 张引弟[1] 娄春[2] 刘畅[1] HU Duoduo;ZHANG Yindi;LOU Chun;LIU Chang(College of Petroleum Engineering,Yangtze University,Wuhan 430100,China;School of Energy and Power Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]长江大学石油工程学院,湖北武汉430100 [2]华中科技大学能源与动力工程学院,湖北武汉430074

出　　处：《北京石油化工学院学报》2018年第3期51-58,共8页Journal of Beijing Institute of Petrochemical Technology

基　　金：中国石油科技创新基金(2015D-5006-0603);国家自然科学基金(51306022);长江青年科技创新团队基金(2015cqt01)

摘　　要：分别对O2/N2和O2/CO2两种气氛下乙烯层流扩散火焰的温度及辐射特性进行了光学检测和数值模拟。采用高速彩色CCD摄像机的三基色(R、G和B波段)信息进行双色法和辐射多光谱测量。火焰辐射光谱和辐射图像中包含大量与火焰温度和辐射特性参数有关的信息,利用这些信息结合合理的算法可以计算火焰表面温度、黑度、火焰内部温度和辐射介质颗粒浓度等参数。为了验证检测结果的准确性,采用FLUENT对相同实验工况下的乙烯火焰进行数值模拟研究,并将实验结果与数值模拟结果进行对比。结果表明,2种燃烧氛围下的模拟燃烧温度与实验检测结果相吻合,两者之间平均误差为8.06%,在工业生产中这一误差是可以接受的。Optical detection and numerical simulation of the temperature and radiation characteristics of the ethylene laminar diffusion flame in O 2/N 2 and O 2/CO 2 atmospheres were carried out. The two-color （R, G, and B-band） information of the high-speed color CCD camera is used for two-color method and radiation multi-spectral measurement. The flame radiation spectrum and the radiation image contain a large amount of information related to the flame temperature and radiation characteristic parameters. Using this information combined with a reasonable algorithm, parameters such as flame surface temperature, blackness, flame internal temperature and radiation medium particle concentration can be calculated. In order to verify the accuracy of the test results, FLUENT was used to simulate the ethylene flame under the same experimental conditions, and the experimental results were compared with the numerical simulation results. The results show that the simulated combustion temperatures in the two combustion atmospheres are consistent with the experimental results, and the average error between the two is 8.06%. This error is acceptable in industrial production.

关 键 词：彩色3-CCD相机 O2/CO2氛围 乙烯扩散火焰 光学检测 数值模拟 

分 类 号：TK16[动力工程及工程热物理—热能工程]