Quantitative Analysis of Concentration Distribution in Non-Evaporative Diesel Spray with Laser Induced Fluorescence Method

Abstract

In this paper, a quantitative analysis of concentration distribution in non-evaporative diesel spray with Laser Induced Fluorescence method (LIF)is reported. It is well known that changes in fuel injection and ambient conditions have a significant effect on spray characteristics. Although many studies have been conducted on the characteristics of diesel sprays, little is known about the effect of fuel injection and ambient conditions on the dispersion of liquid phase concentration. The purpose of this study is to evaluate the effects of injection and ambient conditions on mixture formation through quantitative analysis of liquid phase concentration distribution in non-evaporating spray. The cross-sectional mass flow of the fuel was obtained using the momentum theory from the measured concentration distribution of the liquid phase using the laser-induced fluorescence method. The relationship between the fluorescence intensity and the liquid phase concentration was estimated using these data. As a result, quantitative spatial distribution of the liquid phase concentration was obtained, and the effects of injection and ambient conditions on the dispersion of the liquid phase concentration were evaluated.