Abstract In order to further improve the temperature control accuracy of vacuum black body, the temperature distribution of vacuum black body is studied by means of theoretical analysis, numerical simulation and experiment, the heat transfer formula between black body and environment is derived, and the temperature distribution characteristics of vacuum black body are analyzed.For the specific black body structure, the corresponding temperature field control equation is further simplified, the three-dimensional model is simplified to a one-dimensional model without loss of precision, the calculation complexity is reduced, the simulation time is shortened, and the numerical stability in the process of solving is improved.The numerical results are in good agreement with the experimental data, but the global maximum temperature difference of vacuum black matter obtained by numerical simulation is about 3 times the temperature difference between measuring points, which indicates that the actual temperature control accuracy of black body is much lower than that of experiment results.
WU Qiang,HAO Xiao-peng,SONG Jian, et al. The Investigation on the Temperature Field Uniformity of a High-precision Vacuum Blackbody[J]. Acta Metrologica Sinica, 2022, 43(10): 1279-1284.
［1］Victor I S, Andrey A B, Boris B K, et al. Metrological support for climatic time series of satellite radiometric data［J］. J of Applied Remote Sensing, 2009,3(1):033506.
［2］Qi C L, Wu C Q, Hu X Q, et al. High Spectral Infrared Atmospheric Sounder (HIRAS): System Overview and On-Orbit Performance Assessment［J］. IEEE Transactions on Geoscience and Remote Sensing, 2020, 58 (6): 4335-4352.
［3］胡朝云, 郝小鹏, 宋健, 等. 红外高光谱大气探测仪星载固定点黑体辐射源的研制［J］. 计量学报, 2019, 40 (2): 232-239.
Hu C Y, Hao X P, Song J, et al. Development of Blackbody Radiation Sources at Fixed Point on Satellite of Infrared Hyperspectral Atmospheric Detector［J］. Acta Metrologica Sinica, 2019, 40 (2): 232-239.
［4］Hao X P, Song J, Ding L, et al. Spaceborne radiance temperature standard blackbody for Chinese highprecision infrared spectrometer［J］. Metrologia, 2020, 57 (6): 065016.
［5］Hao X P, Sun J P, Gong L Y, et al. Research on H500-Type High-Precision Vacuum Blackbody as a Calibration Standard for Infrared Remote Sensing［J］. International Journal of Thermophysics, 2018, 39 (4): 51.
［6］Hao X P, Sun J P, Xu X Y, et al. Miniature Fixed Points as Temperature Standards for In Situ Calibration of Temperature Sensors［J］. International Journal of Thermophysics, 2017, 38 (6):90.
［7］Yang J, Gong P , Fu R, et al. The role of satellite remote sensing in climate change studies［J］. Nature Climate Change, 2013, 3 (10): 875-883.
［8］Krutikov V N, Sapritsky V I, Khlevnoy B B, et al. The Global Earth Observation System of Systems (GEOSS) and metrological support for measuring radiometric properties of objects of observations［J］. Metrologia, 43 (2): 94-97.
［9］Jonathan M, Christopher J M, Emma R. Applying principles of metrology to historical Earth observations from satellites［J］. Metrologia, 2019, 56 (3): 032002.
［10］Best F A, Adler D P, Pettersen C, et al. On-Orbit Absolute Radiance Standard for Future IR Remote Sensing Instruments［C］//11th International Conference on New Developments and Applications in Optical Radiometry. Hawaii,USA,2011.
［11］Boris K, Irina G, Klaus A, et al. Development of large-area high-temperature fixed-point blackbodies for photometry and radiometry［J］. Metrologia,2018,55 (2):43-51.
［12］Sima R H, Hao X P, Song J, et al. Accurate numerical model for characteristic temperature acquisition of miniature fixed-point blackbodies［J］. Measurement, 2021, 168:108462.
［13］Gero P J, Anderson J G, Dykema J A, et al. A Blackbody Design for SI traceable Radiometry for Earth Observation［J］. Journal of Atmospheric and Oceanic Technology, 25 (11): 2046-2054.
［14］Monte C, Gutschwager B, Adibekyan A. Radiometric calibration of the in-flight blackbody calibration system of the GLORIA interferometer［J］. Atmospheric Measurement Techniques, 2014, 7 (1): 13-27.
［15］Pearce J, Veltcheva R, Peters D, et al. Miniature gallium phase-change cells for in situ thermometry calibrations in space［J］. Measurement Science & Technology, 2019, 30 (12): 124003.
［16］Wukchul J, Jonathan V P, Jihye P. Comparison between the liquidus temperature and triple-point temperature of tin realized by heat pulse-based melting［J］. Metrologia, 2018, 55 (3): 17-24.
［17］杨延龙, 郝小鹏, 宋健, 等. 中温区真空标准黑体辐射源研制［J］. 计量学报, 2021, 42 (2): 129-136.
Yang Y L, Hao X P, Song J, et al. Development of Vacuum Standard Blackbody Radiation Source in Middle Temperature Zone ［J］. Acta Metrologica Sinica, 2021, 42 (2): 129-136.
［18］扈又华, 郝小鹏, 司马瑞衡, 等. 大口径高发射率面型黑体辐射源的研制［J］. 计量学报, 2021, 42 (3): 314-320.
Hu Y H, Hao X P, Sima R H, et al. Development of Large-aperture and High-emissivity Surface Blackbody Radiation Source ［J］. Acta Metrologica Sinica, 2021, 42 (3): 314-320.
［19］李凯, 郝小鹏, 宋健, 等.真空汞固定点黑体辐射源的设计与研制［J］.计量学报, 2020,41(4):413-418.
Li K, Hao X P, Song J, et al. Design and Development of Vacuum Mercury Fixed Point Blackbody Radiation Source［J］. Acta Metrologica Sinica, 2020, 41 (4): 413-418.
2022, Vol. 43 
