采用示踪激光诱导荧光方法进行喷雾燃烧诊断

2012/01/23   下载量： 6 次

方案摘要

方案下载
应用领域 其他
检测样本 其他
检测项目
参考标准 暂无

To understand and optimize the combustion processes in new types of internal combustion engines, like gasoline direct-injection engines, non-intrusive laser-based diagnostics methods have proven to be versatile and important tools to measure combustion characteristics. Most engine developers already rely on optical methods in the development of new engines. To guarantee accurate and reliable results of optical measurements it is necessary to carefully evaluate and characterize these techniques under realistic conditions. In this work a variety of laser-based diagnostics techniques, mostly based on the tracer- LIF principle, have been evaluated for their applicability and limitations and have been applied to different spray systems – reaching from single droplets, over model sprays to fuel sprays in a firing test engine. The tracer-laser-induced-fluorescence (LIF) method is based on doping the fuel with a fluorescent substance whose fluorescence characteristics are used to measure various physical properties of the spray, such as temperature, droplet size, or droplet velocity. From these properties information about heat and mass-transfer mechanisms in the spray can be gained. However, the characteristics of the used tracers must be known in detail in order to guarantee useful and comparable results. Therefore, in this work various tracers were characterized in terms of their evaporation and temperaturedependent properties. The tracers Atto 680, Rhodamine 800 and Rhodamine B have further been tested for their applicability to realistic fuels.

方案下载
配置单
上一篇 在一个双稳湍流涡旋火焰中，对间歇性动态的时间-频率定位
下一篇 灼热浑浊顺流中脉冲式甲烷喷流自点火过程的高速成像测量

文献贡献者

北京欧兰科技发展有限公司
金牌会员 丨 第17年
查看全部资料
相关仪器 更多
相关方案
更多

相关产品

当前位置： 欧兰科技 方案 采用示踪激光诱导荧光方法进行喷雾燃烧诊断

关注

拨打电话

留言咨询