多波长光谱法检测乙烯火焰中温度和碳黑生成  

Measurements of temperature and soot in C_2H_2 flame using multi-wavelength spectrum analysis

作　　者：周怀春[1] 江波[1] 卢晶[1] 娄春[1] 

机构地区：[1]华中科技大学煤燃烧国家重点实验室,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2007年第12期107-110,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50636010)

摘　　要：提出用光谱仪测量轴对称扩散火焰在800~950 nm波长范围的单色辐射强度,用阿贝尔逆变换从单色辐射强度中求解出源项H,再根据火焰复折射率函数与波长的关系,从源项H中同时计算出火焰温度和碳黑体积分数.光谱仪用黑体炉进行标定,对乙烯扩散火焰中部和上部的进行了检测,给出了火焰温度和碳黑体积份额沿半径的分布,检测结果与光学法相比具有较小误差,表明该方法是可行的.Monochromatic radiative intensities of an axisymmetric diffusion flame over the bands of 800～950nm was measured by a spectrometer.The source term H was solved from monochromatic radiative intensities by Abel inverse method.The temperature and soot volume fraction of the flame were calculated by the source term according to the relationship between complex refractive index and wavelength.The spectrometer was calibrated by a blackbody furnace.The temperature and soot volume fraction in the top and middle part...

关 键 词：光谱分析 温度 碳黑 阿贝尔逆变换 

分 类 号：TK16[动力工程及工程热物理—热能工程]