Macroscopic characteristics for direct-injection multi-hole sprays using dimensionless analysis
Macroscopic characteristics for direct-injection multi-hole sprays using dimensionless analysis
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使用无量纲分析的直喷多孔喷雾的宏观特性
DOI：
10.1016/j.expthermflusci.2012.02.003
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发表时间：
2012-07
影响因子：
3.2
通讯作者：
Cleary, David J.
中科院分区：
文献类型：
--
作者：
Zeng, Wei;Xu, Min;Zhang, Ming;Zhang, Yuyin;Cleary, David J.
宏观喷雾特性进行了量化，使用无量纲分析，通过检查与液体射流破碎的主导力量的作用。韦伯数，雷诺数，和空气-液体密度比无量纲数被用来捕捉的主要力量，包括惯性，粘性，表面张力，和气动阻力。平面米氏散射技术用于在当今火花点火直喷（SIDI）发动机的广泛条件下生成喷雾图像，提供相对较大范围的无因次数。使用汽油、甲醇和乙醇流体检查燃料性质的影响。六个区域上描述的韦伯数与雷诺数域被选中，以确定宏观喷雾结构上的惯性力，表面张力和粘性力的相对重要性。空气动力阻力的影响是单独确定的喷雾在一个范围内的环境空气-液体密度比的特征。结果表明，对于非闪急沸腾多孔喷雾，韦伯数和气液密度比对喷雾贯穿距离和喷雾羽流角的影响要比雷诺数的影响大得多。与粘性力和表面张力相比，惯性力和空气阻力是更重要的因素。该分析产生了喷雾穿透和喷雾羽流角的无量纲相关性，为喷雾破碎和雾化过程提供了重要的见解。
The macroscopic spray characteristics were quantified using dimensionless analysis by examining the role of the dominating forces associated with liquid-jet breakup. The Weber number, Reynolds number, and air-to-liquid density ratio dimensionless numbers were used to capture the primary forces including the inertia, viscous, surface tension, and aerodynamic drag forces. Planar Mie-scattering technique was applied to generate spray images over a broad range of conditions found in today’s spark-ignition-direct-injection (SIDI) engines, providing a relatively large range of dimensionless numbers. The effect of fuel properties were examined using gasoline, methanol and ethanol fluids. Six regions described on a Weber number versus Reynolds number domain were selected to identify the relative importance of the inertia force, surface tension force, and viscous force on macroscopic spray structure. The effect of aerodynamic drag was individually determined by characterizing the spray over a range of ambient air-to-liquid density ratios. As a result, for the non-flash-boiling multi-hole sprays in this study, the Weber number and air-to-liquid density ratio have much more profound effect on the spray penetration and spray–plume angle compared to the Reynolds number contribution. The inertia force and air drag force are more important factors compared to the viscous force and surface tension force. This analysis yielded dimensionless correlations for spray penetration and spray–plume angle that provided important insight into the spray breakup and atomization processes.
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影响因子：
3.7
作者：
Andriotis, A.;Gavaises, M.;Arcoumanis, C.
通讯作者：
Arcoumanis, C.
影响因子：
5.3
作者：
Xibin Wang;J. Gao;D. Jiang;Zuo-hua Huang;Wansheng Chen
通讯作者：
Xibin Wang;J. Gao;D. Jiang;Zuo-hua Huang;Wansheng Chen
影响因子：
1.2
作者：
T. Parker;L. Rainaldi;W. Rawlins
通讯作者：
T. Parker;L. Rainaldi;W. Rawlins
DOI：
10.2514/6.1992-462
发表时间：
1992-01
期刊：
2010 International Conference on Simulation of Semiconductor Processes and Devices
影响因子：
--
作者：
P. Wu;L. Tseng;G. Faeth
通讯作者：
P. Wu;L. Tseng;G. Faeth
影响因子：
2.4
作者：
Kihyung Lee;R. Reitz
通讯作者：
Kihyung Lee;R. Reitz