用于湍流燃烧温度测量的激光诊断技术

Laser Diagnostics for Temperature Measurements in Turbulent Flames

在湍流燃烧模型及CFD仿真软件的实验验证以及实际燃烧装置性能改进中,准确的温度测量以及温度梯度分布测量十分重要.Rayleigh散射、过滤Rayleigh散射和双线平面激光诱导荧光等基于激光的测温技术已在湍流燃烧实验研究中广泛应用,但每种测温技术都不能满足所有的测量环境.因此,须根据具体的探测对象和测量需求,对测温方法和实验方案进行合理选择.文章主要对这3种测温技术的工作原理、适用条件、研究现状和实际应用中需注意的问题进行综述.

Further improvement of sophisticated turbulent flame models and computational fluid dynamics（ CFD） codes requires accurate and reliable temperature and its distribution data from turbulent flames. For this purpose,laser-based diagnostic techniques have been widely used in the temperature measurements of turbulent flames,such as Rayleigh scattering,filtered Rayleigh scattering and two-line planar laser induced fluorescence. However,there is no single laser diagnostic technique that can be applied under all circumstances. Thus,the measurement techniques and experimental scheme must be carefully considered and properly chosen in terms of detection targets and requirements. This paper reviewed the basic principle,suitable conditions,research status and matters worth attention in practical application for the three thermometry techniques.