Optimal location of a particulate matter sampling head outside an unmanned aerial vehicle--颗粒学报PARTICUOLOGY

Zhang, J., Ji, Y., Zhao, J., & Zhao, J. (2017). Optimal location of a particulate matter sampling head outside an unmanned aerial vehicle. Particuology, 32, 153-159. https://doi.org/10.1016/j.partic.2016.09.012

Optimal location of a particulate matter sampling head outside an unmanned aerial vehicle

Jing Zhang, Yaqin Ji ^*, Jie Zhao, Jingbo Zhao

College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China

10.1016/j.partic.2016.09.012

Volume 32, June 2017, Pages 153-159

Received 11 November 2015, Revised 7 September 2016, Accepted 18 September 2016, Available online 6 March 2017, Version of Record 20 April 2017.

E-mail: jiyaqin@nankai.edu.cn

Highlights

• A CFD simulation and wind-tunnel experiment were conducted to determine suitable sampling points outside an unmanned aerial vehicle.

• The flow field and the trajectories of PM₁, PM_2.5 and PM₁₀ around the UAV were simulated.

• Wind tunnel was used to test the flow field and the distribution of particulates in different size.

• A method was provided to determine the optimal location of other instruments outside an aircraft.

Abstract

Particulate matter (PM) has received considerable attention from scientists because of its adverse effects on human health. Unmanned aerial vehicles (UAVs) offer a new approach for monitoring PM in inaccessible or dangerous locations. Computational fluid dynamics software and a wind-tunnel experiment were used to evaluate the flow field at 20, 30, and 40 m/s, as well as the trajectories of PM₁, PM_2.₅, and PM₁₀. The numerical simulation results show that the PM sampling head can be installed 440–680 mm from the UAV nose, and at least 130, 135, and 145 mm below the horizontal axis for free stream velocities of 20, 30, and 40 m/s, respectively. Wind-tunnel experiment results confirmed and improved on those numerical results, and showed that the PM sampling head can be 500–600 mm aft the UAV nose, at vertical distances below the horizontal axis of at least 138 mm for 500–550 mm, and 157 mm for 550–600 mm. In addition, sampling points can be located at either side of the optimal ranges, not only on the center line or the UAV.

Graphical abstract

Keywords

Particulate matter; CFD; Wind tunnel; Optimal location

文章导读