The Irwin wind sensor has been widely used for measuring mean and fluctuating wind speed near the ground surface for evaluation of pedestrian-level wind condition. Because of its simple design, the Irwin wind sensor is not capable to extracting the wind direction information from the pressure difference between sensor top and ground level in wind tunnel experiment. A new-type directional Irwin wind sensor (DIWS) for measuring pedestrian-level wind speeds and wind direction simultaneously in wind tunnel is described. Similar to the Irwin wind sensor, it is axisymmetric and a series of holes (four, five and six holes) connected to pressure tubes have been set just on the probe surface in specific distance to the central tube. The calibration of wind speed refers to Irwin wind sensor literature, and the determination of wind direction needs to be calibrated by comparing mean pressure differences between all the surface tubes and the central tube at each wind direction (0° to 360°, interval of 10°). In uniform flow condition, by performing wind tunnel experiments with the directional Irwin wind sensor in three series of holes cases, the performance of the sensor will be investigated. The calibration formulae for all the parameter cases can be adopted as a database for further relative research and commercial test facilities.
|Translated title of the contribution||Development and Wind Tunnel Experimental Application of Multi-Hole Type Directional Irwin Wind Sensor|
|Number of pages||9|
|Journal||Journal of the Chinese Institute of Civil and Hydraulic Engineering|
|Publication status||Published - 2019 Dec 1|
All Science Journal Classification (ASJC) codes
- Civil and Structural Engineering