Affiliation:
1. Harbin Institute of Technology, 518055 Shenzhen, People’s Republic of China
2. Shenzhen Technology University, 518118 Shenzhen, People’s Republic of China
Abstract
Experimental assessment of safe and precise flight control algorithms for unmanned aerial vehicles under gusty wind conditions requires the capability to generate a large range of velocity profiles. In this study, we employ a small fan-array wind generator that can generate flows with large spatial and temporal variabilities. We perform a thorough aerodynamic characterization, operating the fans uniformly from low to maximum levels. Particle image velocimetry and hot-wire measurements indicate a jetlike flow with a nearly uniform core, which monotonously contracts in the streamwise direction and the surrounding, growing unsteady shear layers. These complex dynamics result in a limited region with a desired flow profile and turbulence level. The experimental results shed light on the flow generated by a full-scale fan-array wind generator, and they indicate the need for further improvements via properly designed add-ons and dedicated control algorithms.
Funder
Shenzhen Research Foundation for Basic Research
National Natural Science Foundation of China
Guangdong Natural Science and Engineering Grant
Science and Technology Innovation Bureau, Pingshan District, Shenzhen City, China
Publisher
American Institute of Aeronautics and Astronautics (AIAA)