Abstract：This paper analyzes and studies the uncertainty measurement in verification results of meteorological low-speed loop wind tunnel in Beijing.Firstly,the definition of uncertainty measurement and operating principle of low-speed loop wind tunnel are expounded.Then,the expanded uncertainty of verification results of meteorological low-speed loop wind tunnel are obtained by establishing the numerical model for wind tunnel verification results and determining the uncertainty in component measurement of standard pitot tube,temperature sensor,humidity sensor,air pressure sensor and digital micro pressure gauge.From the analysis results,it can be concluded that in order to improve the accuracy of wind tunnel verification results,in addition to ensuring the level of verification technology,it is necessary to further reduce or eliminate the errors caused by influencing factors such as instrument and instrument installation,manual reading,and experimental environment,etc.
2023, Vol. 40 
