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同济大学 汽车学院 上海,200092
收稿日期:2013-03-28,
修回日期:2013-06-08,
网络出版日期:2012-10-19,
纸质出版日期:2013-10-15
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李治龙 吴志军 王幸 黄魏迪 龚慧峰. 液滴半径与其侧向散射光通量关系的实验研究[J]. 光学精密工程, 2013,21(10): 2502-2507
LI Zhi-long WU Zhi-jun WANG Xing HUANG Wei-di GONG Hui-feng. An experimental study on the relationship between droplet radius and its lateral scattering luminous flux[J]. Editorial Office of Optics and Precision Engineering, 2013,21(10): 2502-2507
李治龙 吴志军 王幸 黄魏迪 龚慧峰. 液滴半径与其侧向散射光通量关系的实验研究[J]. 光学精密工程, 2013,21(10): 2502-2507 DOI: 10.3788/OPE.20132110.2502.
LI Zhi-long WU Zhi-jun WANG Xing HUANG Wei-di GONG Hui-feng. An experimental study on the relationship between droplet radius and its lateral scattering luminous flux[J]. Editorial Office of Optics and Precision Engineering, 2013,21(10): 2502-2507 DOI: 10.3788/OPE.20132110.2502.
喷雾雾滴直径的瞬时全场分布测量对其微观特性的研究具有重要的意义。为开发一种基于侧向散射光通量的喷雾液滴直径全场测量方法,在理论推导的基础上,利用均匀液滴射流发生器对液滴半径与其侧向散射光通量之间的关系进行了实验研究。利用数字相机在不同的侧向散射角下,对水和0#柴油的单粒径液滴射流在不同粒径下的侧向散射光通量进行了测量,并对它们之间的关系进行了分析。实验结果表明:液滴半径与其侧向散射光通量之间存在明显的二次函数关系,拟合的相关系数大于0.98;侧向散射角的大小以及液体的种类均不会改变两者之间的二次函数关系,仅影响该关系式系数的大小。为基于侧向散射光通量实现喷雾雾滴直径的全场测量提供了重要依据。
The measurement of spray droplets diameter distributions is of great significance for the research of sprays microscopic characteristics. In order to develop a measurement method which based on the lateral scattering luminous flux
on the basis of the scattering theory
this contribution studied the relationship between the droplet radius and its lateral scattering luminous flux by using a uniform diameter single droplet stream generator. The lateral scattering luminous flux of two different liquids
water and 0# diesel
were measured under different droplets diameters
through a digital camera from different lateral scattering angles
and the relationship was analyzed. The experimental results show that a quadratic function relationship exists between the droplet radius and its lateral scattering luminous flux
the correlation coefficient is greater than 0.98; the lateral scattering angle and the kind of the liquid do not change this quadratic function relationship
but they will affect the coefficient of the quadratic function. It provides an important basis for spray droplets diameter distribution measurement.
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