基于彩色CCD的火焰三维温度场及碳烟浓度场测量系统  

Three-Dimensional Measurement of Temperature and Soot Volume Fraction Field Based on Color CCD System

作　　者：左冰娴 周宾 戴明露 ZUO Bingxian;ZHOU Bin;DAI Minglu(Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education,School of Energy and Environment,Southeast University,Nanjing Jiangsu 210096,China)

机构地区：[1]东南大学能源与环境学院,能源热转换及其过程测控教育部重点实验室,江苏南京210096

出　　处：《传感技术学报》2023年第5期723-730,共8页Chinese Journal of Sensors and Actuators

基　　金：国家重点研究发展计划项目(2017YFB0603204);国家自然科学基金项目(50976024,50906013)。

摘　　要：火焰燃烧参数的测量是燃烧诊断和设备优化运行的数据支撑。提出了一种基于CCD传感器光学模型的三维测量模型,该模型可以有效提高测量的空间分辨率并保证测量结果的有效性。数值模拟结果表明:对于非轴对称火焰的重建,三维测量模型可接受的信噪比可低至40 dB,而二维测量模型仅为60 dB;搭建了基于6个CCD传感器的测量系统,利用三维测量模型对RP-3、空气预混火焰进行了重建,获得了其碳烟温度及浓度分布,并对其分布状态进行了分析。实验测量的空间分辨率达到1 mm×1 mm×1 mm,重建温度与热电偶测量温度的最大温差为49.8 K,相对误差为3.69%,二者具有较高的一致性。The measurement of flame combustion parameters is the data support for combustion diagnosis and equipment optimization.A three-dimensional measurement model based on CCD sensor optical model is proposed,which can effectively improve the spatial resolution and ensure the validity of the measurement results.The numerical simulation results show that for the reconstruction of non-axisymmetric flames,the acceptable signal-to-noise ratio of the three-dimensional measurement model can be as low as 40 dB,compared with 60 dB for the two-dimensional measurement model.A measurement system based on six CCD sensors is built.The three-dimensional measurement model is used to reconstruct the RP-3 and air premixed flame to obtain the temperature and soot volume fraction distribution,and the state of the distribution is analyzed.The spatial resolution of the experimental measurements reaches 1 mm×1 mm×1 mm.The maximum temperature difference between the reconstructed temperature and the temperature measured by the thermocouple is 49.8 K,and the relative error is 3.69%.These two temperatures are in good agreement with each other.

关 键 词：CCD传感器 辐射成像 碳烟温度 碳烟体积分数 RP-3航空煤油 

分 类 号：TN386.5[电子电信—物理电子学] TK311[动力工程及工程热物理—热能工程]