明渠自曝气流动实验研究

IF 2.1 3区工程技术 Q2 ENGINEERING, CIVIL

Journal of Hydraulic Engineering Pub Date : 1958-12-01 DOI:10.1061/JYCEAJ.0000261

L. G. Straub, A. G. Anderson

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引用次数: 129

摘要

本文介绍了自充气流中空气浓度分布的测量方法。在不同坡度和流量的沙粒型地表粗糙通道中进行了试验，并将试验数据作为研究气流夹带机理以及气流含量和分布与水流特性之间关系的依据。对数据的分析表明，基于简化的湍流输运概念的关系可以充分描述气流分布，因此是流动特性的函数。最大深度和平均流速都比相应的无气流有所增加。

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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Experiments on Self-Aerated Flow in Open Channels

Measurements of distribution of air concentration in self-aerated flows are presented in this paper. The experiments were made in a rough channel of sand-grain type surface at various slopes and discharges, and the data were used as a basis for study of the mechanism of entrainment of air and to relate the air content and distribution to the characteristics of the flow. The analysis of the data shows that the air distribution can be adequately described by relationships based upon a simplified concept of turbulent transport and thus are functions of the flow characteristics. The maximum depth and the mean velocity are both shown to increase above those of a corresponding nonaerated flow.

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来源期刊

Journal of Hydraulic Engineering 工程技术-工程：机械

CiteScore

5.10

自引率

8.30%

发文量

审稿时长

10 months

期刊介绍： The Journal of Hydraulic Engineering accepts original contributions that describe the analysis and solutions of problems in hydraulic engineering. Technical Notes may present a problem, without solution, of common interest. Topics range from flows in closed conduits to free-surface flows (canals, rivers, lakes, and estuaries) to environmental fluid dynamics. Topics include transport processes involving fluids (multiphase flows) such as sediment and contaminant transport, and heat and gas transfers. Emphasis is placed on the presentation of concepts, methods, techniques, and results that advance knowledge and/or are suitable for general application in the hydraulic engineering profession.