Measurement method of low wind speed flow field in large-scale three-dimensional space
Fu Dongxiang, Hu Yi, Liu Jianxu, Wu Guojing, Guo Wei, Zhou Meng,Zhang Sheng, Sai Qingyi, Wu Xianjin, Feng Hongqi and Wang Wenbin
The distribution of flow field in closed three-dimensional space is very important to the design of ventilation system. Aiming at the measurement of low wind speed flow field in large-scale three-dimensional space of a special equipment, proposes a contact measurement scheme, and designs a three-dimensional mobile measurement platform and its software system. The platform is equipped with wind speed sensor array, which can automatically move to the preset grid point for wind speed measurement, and then obtain the wind speed flow field distribution in three-dimensional space. Calibrates the low wind speed sensor with the k-means RBF network. Compared with the least square method, the scheme features high accuracy and reliability. The results show that the measurement scheme and system are feasible, effective and low cost.