Research on infrared radiation signatures of high-altitude plume based on DSMC method

Xingdong Bao; Hongxia Mao; Jie Wu; Yanbing Dong

doi:10.1117/12.2244158

25 October 2016 Research on infrared radiation signatures of high-altitude plume based on DSMC method

Xingdong Bao, Hongxia Mao, Jie Wu, Yanbing Dong

Proceedings Volume 10157, Infrared Technology and Applications, and Robot Sensing and Advanced Control; 101570D (2016) https://doi.org/10.1117/12.2244158
Event: International Symposium on Optoelectronic Technology and Application 2016, 2016, Beijing, China

Abstract

Exhaust plume flow field have the characteristics of high temperature, high speed and multi-species flow. Exhaust plume infrared signal are important basis of diagnosing, detecting and identifying plume spectrum. This paper focuses on the infrared radiation characteristics of high-altitude plume. The plume flows exhausted from a micro-nozzle of a low-thrust engine at high-altitude have been simulated numerically through using a DSMC method. Both the properties of plume flow at high altitude and the non-equilibrium effect related to rarefied gases are analyzed. Results are given numerically in good agreement with high-altitude plume observations. With the fields of pressure, temperature and main components of the exhaust plume as input data, the line-by line method was used to calculate the 2~5μm infrared spectral radiation properties of the plume. Different flight conditions are considered to analyze the influence on the infrared radiation characteristics. Some interesting conclusion are finally achieved.

Citation Download Citation

Xingdong Bao, Hongxia Mao, Jie Wu, and Yanbing Dong "Research on infrared radiation signatures of high-altitude plume based on DSMC method", Proc. SPIE 10157, Infrared Technology and Applications, and Robot Sensing and Advanced Control, 101570D (25 October 2016); https://doi.org/10.1117/12.2244158

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