机身臂横截面对四旋翼无人机气动和气动声学性能的影响：数值研究

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-01-01 DOI:10.1177/17568293231200281

Jizhou Liu, Li Ming, Kaimin Yang, Gao Lei

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引用次数: 0

摘要

通过数值模拟研究了机身臂截面形状对悬停状态四旋翼无人机气动性能和气动声学性能的影响。采用[公式:见文]SST湍流模型，采用Reynolds平均Navier-Stokes解算器对某型双桨转子和机身臂周围的流场进行了非定常模拟。对具有相同横截面面积的5种机身臂横截面形状的总推力和声压级谱进行了仿真比较。结果表明，在不同转速下，方形截面的机身臂具有最佳的气动性能。圆形横截面的机身臂在气动性能上排名第二。然而，它具有最好的气动声学性能。与圆形截面相比，其他三种截面在叶片通过频率下的推力较小，声压级较高，这在气动和气动声学上都不是最优的。

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Influence of fuselage arm cross-section on the aerodynamic and aeroacoustic performance of quadcopter unmanned aerial vehicles: A numerical investigation

This paper investigates the influence of the fuselage arm cross-section shape on the aerodynamic and aeroacoustic performance of quadcopter Unmanned Aerial Vehicles in hover state by numerical simulation. The unsteady simulations of the flow field around one generic two-blade rotor and one fuselage arm are conducted by the Reynolds Averaged Navier-Stokes solver with the [Formula: see text] SST turbulence model. The total thrust forces and the sound pressure level spectra of five fuselage arm cross-section shapes with the same cross-section area are simulated and compared. Results show that the fuselage arm with a square cross-section has the highest aerodynamic performances for all the tested speeds of rotation. The fuselage arm with a circular cross-section ranks second in aerodynamic performance. However, it has the best aeroacoustic performance. The other three tested cross-section shapes show less thrust forces and higher sound pressure levels at the blade passing frequencies than the circular cross-section, which are not optimal neither aerodynamically nor aeroacoustically.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.