Numerical Study on Dynamic-Stall Characteristics of Finite Wing and Rotor | |
Wang, Qing1; Zhao, Qijun2 | |
刊名 | APPLIED SCIENCES-BASEL
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2019-02 | |
卷号 | 9期号:3 |
关键词 | helicopter rotor unsteady aerodynamics dynamic stall RANS equations |
ISSN号 | 2076-3417 |
DOI | 10.3390/app9030600 |
英文摘要 | To study the three-dimensional effects on the dynamic-stall characteristics of a rotor blade, the unsteady flowfields of the finite wing and rotor were simulated under dynamic-stall conditions, respectively. Unsteady Reynolds-averaged Navier-Stokes (URANS) equations coupled with a third-order Roe-MUSCL spatial discretization scheme were chosen as the governing equations to predict the three-dimensional flowfields. It is indicated from the simulated results of a finite wing that dynamic stall would be restricted near the wing tip due to the influence of the wing-tip vortex. By comparing the simulated results of the finite wing with the spanwise flow, it is indicated that the spanwise flow would arouse vortex accumulation. Consequently, the dynamic stall is restricted near the wing root and aggravated near the wing tip. By comparing the simulated results of a rotor in forward flight, it is indicated that the dynamic stall of the rotor would be inhibited due to the effects of the spanwise flow and Coriolis force. This work fills the gap regarding the insufficient three-dimensional dynamic stall of a helicopter rotor, and could be used to guide rotor airfoil shape design in the future. |
WOS研究方向 | Chemistry ; Materials Science ; Physics |
语种 | 英语 |
出版者 | MDPI |
WOS记录号 | WOS:000459976200240 |
状态 | 已发表 |
内容类型 | 期刊论文 |
源URL | [http://119.78.100.223/handle/2XXMBERH/32118] ![]() |
专题 | 能源与动力工程学院 |
通讯作者 | Zhao, Qijun |
作者单位 | 1.Lanzhou Univ Technol, Coll Energy & Power Engn, Lanzhou 730050, Gansu, Peoples R China 2.Nanjing Univ Aeronaut & Astronaut, Natl Key Lab Sci & Technol Rotorcraft Aeromech, Nanjing 210016, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Qing,Zhao, Qijun. Numerical Study on Dynamic-Stall Characteristics of Finite Wing and Rotor[J]. APPLIED SCIENCES-BASEL,2019,9(3). |
APA | Wang, Qing,&Zhao, Qijun.(2019).Numerical Study on Dynamic-Stall Characteristics of Finite Wing and Rotor.APPLIED SCIENCES-BASEL,9(3). |
MLA | Wang, Qing,et al."Numerical Study on Dynamic-Stall Characteristics of Finite Wing and Rotor".APPLIED SCIENCES-BASEL 9.3(2019). |
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