便携式空气流量计广泛用于现场测量空气流量。为了覆盖广泛的流量范围，通常使用多喷嘴。如果采用ASHRAE标准安装喷嘴，设备会变得又大又重，并且难以紧凑的尺寸和搬运。为了克服这个问题，进行了计算流体动力学（CFD）模拟，以确定使空气流量计尺寸更小的因素。通过实验验证了数值模拟的准确性，多喷嘴安装所需的面积可减少47%。基于CFD建模，制造了便携式空气流量计，并与符合ANSI/ASHRAE 51-1999的空气流量测量装置进行了比较。 对影响空气流量计长度和横截面尺寸的喷嘴和挡板进行了选择和改进，以适应便携式流量计。本研究开发的便携式出口压力控制小型多喷嘴流量计体积小，现场测量精度可接受，误差为0.93%。引用:2019年冬季会议，佐治亚州亚特兰大，会议论文

Portable air flow meters are widely used for measuring air flow rates in the field. To cover broad range of flow rates, multi nozzles are generally used. If ASHRAE standard for installing nozzles is applied, the device gets large and heavy, and becomes difficult for compact sizing and handling. In order to overcome this problem, computational fluid dynamic(CFD) simulations were performed to identify the factors that can make the size of the air flow meter smaller. With help of numerical simulation of which the accuracy was verified by the experiment, the necessary area for multi nozzle installation can be reduced by 47%. Based on the modeling of CFD, a portable air flow meter was manufactured and compared with an air flow measurement device that is compliant with ANSI/ASHRAE 51-1999. Nozzles and dampers which affect the length and cross-sectional size of an air flow meter were selected and improved to suit the portable type. A portable small scale multi nozzle flow meter with exit pressure control that was developed in this study has advantages of small size and acceptable accuracy in the field measurement which showed an error of 0.93%.