IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 5 - FLUVIAL HYDRAULICS AND RIVER MANAGEMENT : Numerical Simulation on the Interaction between a Wall Jet and a Parallel Offset Jet
Numerical Simulation on the Interaction between a Wall Jet and a Parallel Offset Jet
Author : Jiangang Chen, Jianmin Zhang, Yong Peng and Shuai Li
Numerical simulation was carried out for the twin-jet flow generated by a plane wall jet and a parallel offset jet at an offset ration of s\h = 1.0 (4.5 < Fr < 8.0) by using Volume of Fluid (VOF) RNG k ? e turbulence model. As the jet fluid exited the two orifices, the shear layer between the jet and ambient fluid drove the ambient fluid entrainment into the jets. The simulation results were then compared with experimental results published in literature. The results of simulations were conducted to quantify the influence of the Froude number on the distances from the source to the merging point and combined point. The results show that the flow pattern in the stilling basin show a mixing flow pattern of impinging jet and submerged hydraulic jump. In the converging region, the velocity distribution shows a combination of wall jet and submerged hydraulic jump; while in the combined region, the velocity distribution is expected to behave like a single wall jet. The energy dissipation ration is larger than that of classical jump and it reaches above 70% at Fr > 7.0.
File Size : 1,251,823 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Article : THEME 5 - FLUVIAL HYDRAULICS AND RIVER MANAGEMENT
Date Published : 18/07/2016
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