床层障碍物对倾斜密集射流行为的影响

IF 1.7 3区工程技术 Q3 ENGINEERING, CIVIL

Journal of Hydraulic Research Pub Date : 2023-03-04 DOI:10.1080/00221686.2023.2180442

A. Azadi, B. Firoozabadi, A. A. Ashnani, Shayan Habibi

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引用次数: 0

摘要

海水淡化厂排放区周围的珊瑚礁对排放的盐水射流的分布和稀释有影响。在本研究中，使用光衰减（LA）光学方法，实验研究了不同高度的床层障碍物对倾斜负浮力射流（INBJs）行为的影响，包括稀释和空间特性。目前的实验表明，随着床和障碍物引起的约束的加剧，最大归一化射流中心线稀释度降低了40%。随着射流接近障碍物，沿射流内外边缘的扩散增加。目前的结果还表明，在最大高度点的上游，射流对床层障碍物不太敏感，因为动量主导了射流的行为。然而，当存在障碍物时，最大高度点下游区域的射流稀释度会降低。

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Effects of bed obstacles on the behaviour of inclined dense jets

ABSTRACT Coral reefs around the discharge areas of desalination plants have effects on the distribution and dilution of discharged saline jet. In the present study, effects of bed obstacles with different heights on the behaviour of inclined negatively buoyant jets (INBJs), including dilution and spatial characteristics, are experimentally investigated using the light attenuation (LA) optical method. Present experiments show that as the confinement induced by the bed and obstacle intensifies, the maximum normalized jet centreline dilution decreases up to 40%. As the jet approaches the obstacle, spreading along the inner and outer edges of the jet increases. The present results also show that upstream of the maximum height point, the jet is not considerably sensitive to the bed obstacle since the momentum dominates the jet behaviour. However, the jet dilution in regions downstream the maximum height point reduces when the obstacle is present.

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来源期刊

Journal of Hydraulic Research 工程技术-工程：土木

CiteScore

4.90

自引率

4.30%

发文量

审稿时长

6.6 months

期刊介绍： The Journal of Hydraulic Research (JHR) is the flagship journal of the International Association for Hydro-Environment Engineering and Research (IAHR). It publishes research papers in theoretical, experimental and computational hydraulics and fluid mechanics, particularly relating to rivers, lakes, estuaries, coasts, constructed waterways, and some internal flows such as pipe flows. To reflect current tendencies in water research, outcomes of interdisciplinary hydro-environment studies with a strong fluid mechanical component are especially invited. Although the preference is given to the fundamental issues, the papers focusing on important unconventional or emerging applications of broad interest are also welcome.