定量彩虹纹影偏折术作为非烟黑球形火焰的温度诊断方法。

Quantitative rainbow schlieren deflectometry as a temperature diagnostic for nonsooting spherical flames.

作者信息

Feikema Douglas A

机构信息

National Aeronautics and Space Administration, Glenn Research Center at Lewis Field, Cleveland, Ohio 44135, USA.

出版信息

Appl Opt. 2006 Jul 10;45(20):4826-32. doi: 10.1364/ao.45.004826.

DOI:10.1364/ao.45.004826

PMID:16807588

Abstract

Numerical analysis and experimental results are presented to define a method for quantitatively measuring the temperature distribution of a spherical diffusion flame using rainbow schlieren deflectometry in microgravity. The method employed illustrates the necessary steps for the preliminary design of a rainbow schlieren system. The largest deflection for the normal gravity flame considered in this paper is 7.4 x 10(-4) rad, which can be accurately measured with 2 m focal-length collimating and decollimating optics. The experimental uncertainty of deflection is less than 5 x 10-(5) rad.

摘要

本文给出了数值分析和实验结果，以确定一种在微重力环境下使用彩虹纹影偏折法定量测量球形扩散火焰温度分布的方法。所采用的方法阐述了彩虹纹影系统初步设计的必要步骤。本文所考虑的正常重力火焰的最大偏折为7.4×10^(-4)弧度，使用2米焦距的准直和去准直光学元件可以精确测量。偏折的实验不确定度小于5×10^(-5)弧度。