Experimental research on the temperature measurement of super-cooled droplets using laser-induced fluorescence

摘要：

　　The existence of super-cooled water droplets in the cloud produces high risks to the aero-engine operation safety.Knowledge about the temperature behavior of such droplets is of significant importance in the anti-icing research field.This work studies the feasibility of a non-intrusive laser-induced fluorescence(LIF)technique in the application of temperature measurement of super-cooled droplets.Rhodamine B dye in ethylene glycol solution mixed with 50%pure water was used as the fluorescent indicator.Experiments on the fluorescent characteristics of Rhodamine B against solution temperature were first carried out to obtain a temperature scaling tool based on the LIF technique.It was found that the relative fluorescent intensity increases with the solution temperature.This finding was then applied inversely to determine the liquid droplets temperature in the experiment investigation using low temperature nitrogen gas.Results of the current work prove that the presented method is feasible in the application of temperature measurement of super-cooled water droplets.

关键词： Rhodamine B(RhB) ethylene glycol fluorescence droplets temperature measurement

作者: Guilin Liu Haiying Lu

作者单位: Beihang University,Room C1022,New Main Building,No. 37,Xueyuan Rd.,Haidian District,Beijing,100191,C Shenyang Engine Design & Research Institute,Shenyang,110015,China

会议类型: 国际会议

会议名称: The 5th International Symposium on Jet Propulsion and Power Engineering(第五届喷气推进与动力工程国际会议)

会议地点: 北京

会议语种:英文

页码: 1-7

在线出版日期: 2014-09-15（万方平台首次上网日期，不代表论文的发表时间）