管道对转螺旋桨推进器的特性

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2019-11-01 DOI:10.1177/1756829319837661

Longfei Zhao, S. Shkarayev

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引用次数: 3

摘要

本文对低雷诺数范围内开式和导管式对转螺旋桨系统的效率进行了实验研究。选择了8个现成的螺旋桨，直径在139毫米到377毫米之间，建造了7个管道，管道长度为螺旋桨直径的0.28-0.53。进行了静力和风洞实验。与开放式系统相比，导管式对转螺旋桨系统的静态推力系数和功率负荷的最大增幅分别为25%和50%。对于中等尺寸的导管系统，这种性能改进小于先前研究中观察到的长于0.8螺旋桨直径的导管，但大于短于0.15螺旋桨直径的导管。推力系数随推进比的增大而减小。开式和导管式系统的功率负荷在达到最大值后急剧下降。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Characterization of ducted contra-rotating propeller propulsions

This paper presents the experimental studies of the efficiency of open and ducted contra-rotating propeller systems operating in the low Reynolds number range. Eight off-the-shelf propellers were selected with a diameter in the range from 139 mm to 377 mm and seven ducts were built with the duct length of 0.28–0.53 the propeller diameter. Static and wind tunnel experiments were conducted. The maximum increase in the static thrust coefficient and power loading for the ducted contra-rotating propeller systems over the open systems was found to be 25% and 50%, respectively. This performance improvement for the medium size ducted systems is smaller than that observed in previous studies for ducts longer than the 0.8 propeller diameter but greater than for ducts shorter than the 0.15 propeller diameter. The thrust coefficient decreases with an advance ratio increase. The power loading of both open and ducted systems drops dramatically after reaching maxima.

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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.