Micro-Spraying Characteristics of Biodiesel Based on Grey Correlation Analysis

被引：0
|
作者：
Ye L. [1 ]
Liu T. [1 ]
Zhu S. [1 ]
Shi A. [2 ]
机构：
[1] School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang, 212013, Jiangsu
[2] School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, 212013, Jiangsu
来源：
| 1600年 / Xi'an Jiaotong University卷 / 54期
关键词：
Biodiesel; Grey correlation analysis; High speed photography; Sauter mean diameter; Spraying;
D O I：
10.7652/xjtuxb202003018
中图分类号：
学科分类号：
摘要：
To explore the primary and secondary factors affecting the atomization performance of biodiesel, the micro-atomization characteristics of B100 (palm oil biodiesel), N10 (90% biodiesel plus 10% n-butanol in volume) and N20 (80% biodiesel plus 20% n-butanol in volume) at different orifice diameters, injection pressures and back pressures were studied by high speed photography and phase Doppler particle analyzer (PDPA) measurement system. The axial velocity of the oil droplets and the variation trend of the Sauter mean diameter (DSMD) were analyzed. Based on the grey correlation theory, the order of four influencing factors on DSMD of biodiesel was calculated. The results showed that the DSMD of B100 decreased from 106.74 μm at the axial length of 5 mm to 57.98 μm at the axial length of 70 mm; the axial velocity and DSMD of the oil droplet decreased with the percentage of n-butanol. With the increase of the injection pressure and the decrease of the back pressure and the orifice diameter, the DSMD of the biodiesel showed a downward trend and the atomization quality was improved. According to the gray correlation calculation of DSMD, the correlation degrees of the percentage of n-butanol, nozzle diameter, injection pressure and back pressure with DSMD are 0.507 2, 0.755 8, 0.607 7 and 0.789 5, respectively, indicating that the back pressure has the greatest influence on DSMD; the nozzle diameter and injection pressure follow after, and the percentage of n-butanol has the least influence on DSMD. © 2020, Editorial Office of Journal of Xi'an Jiaotong University. All right reserved.
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页码：143 / 149
页数：6
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