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
The results show that bright images used in gray scope can assure the measuring error scope within 5% of spray cone angle and the measuring error scope within 1% of penetration distance.
结果表明对于比较明亮且无阴影的图片仅应用灰度范围就能够保证喷雾锥角的测量误差在5%以内，贯穿距离的测量误差在1%以内；
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.
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。
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