叶轮机械内部流场PIV测试应用研究国内进展

Domestic Progress in PIV Measurement of Internal Flow Field in Turbomachinery

涡轮和压气机内部流场的准确测量有利于深入了解其内部流动特征。相比空间分辨率低、测量位置单一的传统接触式流场测量技术,粒子图像测速(PIV)技术是非接触式新型流场测量技术,具有动态响应快、精度高等优点。以航空发动机工程应用为背景,本文介绍了PIV技术的测速原理,针对叶轮机械内部流场测量的技术需求,重点梳理了多年来PIV技术在国内的研究进展和试验结果。以叶轮机械的流场试验研究为基础,介绍了国内主要研究机构在PIV流场测量方案中的设备组成、使用布局、测量截面、测试结果等技术细节,并对典型测量系统的性能参数进行了归纳总结。通过国内综述内容与流场测量技术未来发展趋势的结合,从实际应用角度出发,提出了PIV技术在叶轮机械内部流场测量试验中应用的关键方向与核心技术。

The accurate measurement of the turbine and compressor flow field is helpful for understanding the internal flow characteristics.Compared to traditional contact flow field measurement technology with low spatial resolution and single measurement location,PlV technology is a new type of flow field measurement technology for non-contact measurement,which has the advantages of fast dynamic response and high accuracy.Based on aeroengine engineering application,the principle of PlV technology is introduced.Aiming at the technical requirements of internal flow field measurement for turbomachinery,the research progress and experimental result of PIV technology in domestic over the years are reviewed.Based on the experimental study of flow field in turbomachinery,the technical details of different unit flow field measurement schemes are introduced,such as equipment composition,usage layout,measurement section and measurement result.The performance parameters of typical measurement systems are summarized.Through the combination of domestic review content and the future development trend of flow field measurement technology,the key direction and core technology of PIV technology in the internal flow field measurement experiment of turbomachinery are proposed from the perspective of practical application.