摘要
伴随着数值天气预报和气候变化研究精细化程度的不断提高,希望探空温度传感器的观测精度达到0.1 K数量级。为了实现此目标,运用计算流体动力学(CFD)方法对珠状热敏电阻器从海平面上升至32 km高空的整个过程进行太阳辐射误差数值分析。在此基础上,针对影响测温精度的引线、引线夹角大小以及太阳照射角度进行分析与探讨,获得其与太阳辐射误差的内在联系。数值求解结果表明:引线、引线夹角大小以及太阳照射角度是太阳辐射误差的重要影响因子。海拔高度与太阳辐射误差之间呈现出随海拔高度的增加斜率不断增大的类指数函数关系。
Due to the increasing amount of attention that has been focused on numerical weather forecast and climate change research,it is desired that the observation precision of sounding temperature sensor can reach 0.1K.To achieve this goal,computational fluid dynamics（CFD）method is used to carry out numerical analysis on solar radiation errors of whole process of bead thermistor from sea level to 32 km altitude.On the basis,aiming at various lead,lead angles,and sun angles,that affect measurement precision are analyzed.The results show that lead,lead angle and sun angle are important factors which affects error.With the increase of elevation from sea level,the solar radiation error appears to be an exponential function correlation with altitude,which exhibits a growing slope rate.
出处
《传感器与微系统》
CSCD
北大核心
2013年第1期13-16,共4页
Transducer and Microsystem Technologies
基金
国家公益性行业(气象)科研专项(GYHY200906037
GYHY201106048)
国家自然科学基金面上项目(41075026
412475042)
江苏高校优势学科建设工程项目
江苏高校优势学科建设工程资助项目共同资助
关键词
探空温度传感器
珠状热敏电阻器
太阳辐射误差
计算流体动力学
数值模拟
sounding temperature sensors
bead thermistor
solar radiation error
computational fluid dynamics
numerical simulation
