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您的检索式：作者名="Fengcheng Song"
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| 1 | Temperature field reconstruction method for aero engine exhaust using the colored background oriented Schlieren technology显示文摘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 feasibility and effectiveness of the proposed method. | SONG Fengcheng WU Jun ZHU Yuheng XU Haitao LI Yanling YU Zhijing | 2022 | Optoelectronics Letters2022，18，4： | 1 |
| 2 | Temperature Field Reconstruction in High-Temperature Gas by Using the Colored Background Oriented Schlieren Method显示文摘A 3D temperature field reconstruction method using the colored background oriented schlieren(CBOS)method is proposed to address image blurring due to the different refractive index of the multi-wavelength light and significant errors produced when the traditional background oriented schlieren(BOS)method is applied to high-temperature gas.First,the traditional method is employed to reconstruct the non-uniform 3D temperature field.Second,the CBOS method is applied to correct the distortion.Then,by analyzing the correlation coefficient among different color points of the colored background pattern,the non-uniform temperature field is reconstructed much more accurately.Finally,the experimental results are verified by applying the Runge-Kutta ray-tracing method and the thermocouple contact measurement method.The maximum average temperature error of the CBOS-reconstructed temperature field is 12.92°C,compared with the thermocouples.Therefore,an accurate three-dimensional reconstruction of the temperature field can be achieved by the proposed method effectively. | Jun Wu Haitao Xu Fengcheng Song Jun Xu Yanling Li Tao Wang | 2020 | Journal of Beijing Institute of Technology2020，29，3： | 0 |
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