基于层析原理的湍流火焰三维测量综述

A review on three-dimensional flame measurements based on tomography

实现对湍流火焰的三维测量是人们长期追求的目标之一。近十年,随着高速相机、激光、数值算法的高速发展,高时空分辨的三维燃烧诊断成为可能。对基于层析原理的三维燃烧诊断技术的发展与应用现状进行综述:首先介绍层析技术的原理以及相关算法的发展情况;其次对实现三维层析燃烧诊断的测量系统进行综述;再次,按照光学信号的分类,分别介绍层析技术结合发射光谱、激光诱导荧光、阴影/纹影、Mie散射等进行三维燃烧测量的应用情况;最后,从实际应用的角度出发,对层析三维燃烧诊断技术的发展提出展望。

Three-dimensional(3D)measurements for turbulent flame have been long desired in the combustion community.In the past decades,with the advancement in high-speed cameras,high-power lasers and computing algorithms,it becomes possible to achieve 3D combustion measurements with sufficient spatial and temporal resolution.This paper reviews the recent development and applications of such a 3D measurement technology based on tomography,so as to provide valuable references to researchers in this field.This review includes the following four parts:First,the principles and computing algorithms of tomography are introduced and reviewed.Second,the experimental measurement systems involved in the 3D tomographic measurements are classified and summarized.Third,the applications of 3D tomographic measurements are introduced including the tomographic chemiluminescence,tomographic laserinduced fluorescence and tomographic shadowgraph/schlieren.Last,we concludes the review and poses several questions for the potential development of the technique.