LIIによるすす濃度定量測定法の開発 : 第1報, LIIの基本特性および信号減衰補正法の評価

概要

論文の詳細を見る
The main factors which prevent quantitative soot measurements using laser-induced incandescence (LII) are expected to be as follows : laser intensity reduction due to soot clouds, LII signal attenuation due to soot clouds lying between the observation points and a camera and uncertainty of a relation between the signals and soot concentrations. To investigate the effects of these factors and solve these problems, LII was applied to a premixed flat flame where soot concentrations were measured in advance by transmissive light extinction method combined with computed tomography. The following points are clarified. (1) The correction on the incident laser attenuation is not necessary by using sufficient laser power because the LII signal saturates over a critical laser intensity. (2) The soot concentration is obtained from the LII signal by the calibration. (3) The signal attenuation can be corrected by multi-layer measurement tequnique using Lambert-Beer's law. Consequently, a quantification has been realized with accuracy of ±10% in this work.
社団法人日本機械学会の論文
1997-11-25