某商用车摆锤冲击安全性CAE 分析与改进设计-亲亲资料网 关键词：直喷汽油机 喷雾化模拟 喷雾锥角 [gap=732]Key words: Gasoline direct injection engine; Spray simulation; Spray cone angle
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Experiment at study on free spray and multi-piece spray were carried out with high-speed photography,Matlab software was used to process digital images,and macroscopical spray characteristic parameters,such as projection spray penetration,spray cone angle,spray area,were measured.
应用高速摄影对自由喷雾和多片喷雾的喷雾过程进行了试验研究,使用Matlab软件对数字图片进行后处理,测取了投影喷雾贯穿距、喷雾锥角、喷雾面积等宏观喷雾特性参数。
参考来源 - 基于Matlab数字图像处理的多片喷雾特性研究·2,447,543篇论文数据，部分数据来源于NoteExpress
喷雾锥角和喷雾均匀度是燃油喷嘴的两个重要指标。
Atomization Angle and uniformity are two key parameters of fuel spray nozzle.
伞形喷雾径向贯穿距离远小于多孔喷雾，喷雾锥角在喷雾早期急剧减小。
However, the radial penetration distance of umbrella spray was much shorter than that of multi hole spray and the umbrella spray Angle decreased rapidly in the early stage of spray development.
背压对贯穿距离、喷雾锥角、喷雾轴心速度和浓度衰减率的影响均大于启喷压力。
It shows that the effects of back pressure on penetration, spray cone Angle, and decline rate of centerline velocity and concentration of the spray are greater than that of fuel injection pressure.
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