| Title | Design and characterization of a multifunctional low-speed anechoic wind tunnel at HKUST |
| Authors | Yi, Wei Zhou, Peng Fang, Yi Guo, Jingwen Zhong, Siyang Zhang, Xin Huang, Xun Zhou, Guocheng Chen, Bao |
| Affiliation | Hong Kong Univ Sci & Technol, Dept Mech & Aerosp Engn, Clear Water Bay, Hong Kong, Peoples R China Peking Univ, Beijing 100871, Peoples R China AVIC Aerodynam Res Inst, Harbin 150001, Peoples R China |
| Keywords | TRAILING-EDGE NOISE PERFORMANCE BLADE SWEPT FLOW |
| Issue Date | Aug-2021 |
| Publisher | AEROSPACE SCIENCE AND TECHNOLOGY |
| Abstract | The Hong Kong University of Science and Technology (HKUST) has installed and commissioned an Ultra quiet Noise Injection Test and Evaluation Device (UNITED). This facility is the first closed-circuit anechoic wind tunnel in Hong Kong. Calibrations and improvements have been made to improve the aerodynamic and aeroacoustic performance since its commissioning in 2016, and various experiments have been conducted in it. The test section is enclosed within a 3.2 m x 3.1 m x 2 m anechoic chamber, and it can be configured as either open-jet or closed test section. The exit plane of the contraction section has a dimension of 0.4 m x 0.4 m, and the flow speed of the test section can be varied from 10 m/s up to 70 m/s. In this paper, the major design constraints and design principles of key wind tunnel sections are described. To achieve low background noise, a silencer network is carefully designed, and a low noise axial fan is specially designed and manufactured for the wind tunnel circuit. It is shown that the metrics of aerodynamic and aeroacoustic performances are comparable to similar facilities across the world. Representative research activities are also briefly summarized in this paper. Particularly, the measurement of trailing edge noise of a flat plate is demonstrated. The measured trailing edge noise collapses well under the classical fifth power-law scaling, suggesting the good performance of the entire measurement system. (C) 2021 Elsevier Masson SAS. All rights reserved. |
| URI | http://hdl.handle.net/20.500.11897/618055 |
| ISSN | 1270-9638 |
| DOI | 10.1016/j.ast.2021.106814 |
| Indexed | EI SCI(E) |
| Appears in Collections: | 待认领 |
