基于OH-PLIF的甲烷/空气旋射流扩散火焰实验研究  

Experimental Study in a Methane/Air Swirling Jet Diffusion Flame Based on OH-PLIF

作　　者：田力 孙婷 刘宁普 李科[1] TIAN Li;SUN Ting;LIU Ning-pu;LI Ke(School of Energy and Environment,Inner Mongolia University of Science and Technology,Baotou 014010,China)

机构地区：[1]内蒙古科技大学能源与环境学院,包头014010

出　　处：《科学技术与工程》2018年第31期167-171,共5页Science Technology and Engineering

基　　金：国家自然科学基金(51266008)资助

摘　　要：利用平面激光诱导荧光技术研究甲烷-空气旋射流扩散火焰中氢氧自由基(OH)的分布。通过OH-PLIF测量技术在已经设计完成的燃烧器(旋风燃烧器)开口上观察不同甲烷和空气的质量流量配比对火焰的温度、颜色变化、火焰的尺寸的影响以及这些因素和OH浓度分布的关系。OH-PLIF的图像是研究火焰结构和流场的有效工具;通过了解OH基的浓度分布来进一步改造发动机内部的结构,从而提高燃烧的效率。A method based on planar laser induced fluorescence technique is to qualitatively measure the OH concentration in the combustion flow field in the diffusion flame of methane-air jet.Through the use of OH-PLIF measurement technology in the already finished opening the burner(cyclone burner)on the observation of different flow ratio of methane and air on flame changes,size,and the relationship between the influence of these factors and the distribution of OH concentration.The image of OH-PLIF is an effective tool to study the flame structure and flow field.By understanding the concentration distribution of OH-PLIF,the internal structure of engine is further improved,so as to improve the combustion efficiency.

关 键 词：旋风燃烧器 OH-PLIF 旋射流燃烧 扩散火焰 

分 类 号：TK16[动力工程及工程热物理—热能工程]