Design and radiation error research of temperature observation instrument based on computational fluid dynamics method
Ge Xiangjian1, Yang Jie1, Zhu Hua'nan1, Hu Chenhao1, Ding Renhui2
1. Nanjing University of Information Science & Technology,Jiangsu Collaborative Innovation Center for Atmospheric Environment and Equipment Technology,Nanjing 210044; 2. Jiangsu Meteorological Detection Center,Nanjing 210009
Abstract：Affected by solar radiation,a relatively larger deviation occurs between the value measured by ground temperature observation instrument and the true temperature of free air,reaching 1 ℃ magnitude.Based on this,a ground temperature observation instrument is designed in this paper,which can be used to effectively prevent the solar radiation from irradiating the temperature probe directly and guide the air flow towards the temperature probe.It is verified by experiment that the mean absolute error and root-mean-square error between the results measured by temperature observation instrument developed in this paper and the base value are 0.030 ℃ and 0.035 ℃ respectively,reaching the technical requirement of 0.1 ℃ magnitude.
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Ge Xiangjian, Yang Jie, Zhu Hua'nan, Hu Chenhao, Ding Renhui. Design and radiation error research of temperature observation instrument based on computational fluid dynamics method. Meteorological Hydrological and Marine Instrument, 2023, 40(2): 13-17.
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2023, Vol. 40 
