SONG Fengcheng,WU Jun,ZHU Yuheng,XU Haitao,LI Yanling,YU Zhijing.Temperature field reconstruction method for aero engine exhaust using the colored background oriented Schlieren technology[J].Optoelectronics Letters,2022,(4):243-250
Temperature field reconstruction method for aero engine exhaust using the colored background oriented Schlieren technology
Author NameAffiliation
SONG Fengcheng 1. College of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China
2. State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China
3. Xinjin Flight Training College, Civil Aviation Flight University of China, Guanghan 618300, China
4. College of Electronic Information and Automation, Civil Aviation University of China, Tianjin 300300, China 
WU Jun 1. College of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China
2. State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China
3. Xinjin Flight Training College, Civil Aviation Flight University of China, Guanghan 618300, China
4. College of Electronic Information and Automation, Civil Aviation University of China, Tianjin 300300, China 
ZHU Yuheng 1. College of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China
2. State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China
3. Xinjin Flight Training College, Civil Aviation Flight University of China, Guanghan 618300, China
4. College of Electronic Information and Automation, Civil Aviation University of China, Tianjin 300300, China 
XU Haitao 1. College of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China
2. State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China
3. Xinjin Flight Training College, Civil Aviation Flight University of China, Guanghan 618300, China
4. College of Electronic Information and Automation, Civil Aviation University of China, Tianjin 300300, China 
LI Yanling 1. College of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China
2. State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China
3. Xinjin Flight Training College, Civil Aviation Flight University of China, Guanghan 618300, China
4. College of Electronic Information and Automation, Civil Aviation University of China, Tianjin 300300, China 
YU Zhijing 1. College of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China
2. State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China
3. Xinjin Flight Training College, Civil Aviation Flight University of China, Guanghan 618300, China
4. College of Electronic Information and Automation, Civil Aviation University of China, Tianjin 300300, China 
Abstract:
      The detection of the jet temperature field in an aircraft engine tail is an effective way to reflect the running state of an engine. To solve the complicated detection process of current laser diagnostic methods, the colored background oriented Schlieren (CBOS) method was proposed to obtain a tail jet temperature field. First, the background Schlieren image with three-color points was collected for the exhaust gas temperature (EGT) field of the engine. Then the refractive index field of the engine exhaust was obtained according to the proposed CBOS method. Finally, the three-dimensional EGT field was reconstructed through the refractive index field. The simulation and the experimental results show the feasibi-lity and effectiveness of the proposed method.
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