首页|Hydrodynamic characteristics and particle tracking of 90° lateral intakes at an inclined river slope

Hydrodynamic characteristics and particle tracking of 90° lateral intakes at an inclined river slope

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Lateral intakes are common in rivers.The pump efficiency and sediment deposition are determined by the local hydrodynamic characteristics and mainstream division width.The hydraulic characteristics of lateral withdrawal from inclined river slopes at different intake elevations should be investigated.Meanwhile,the division width exhibits significant vertical non-uniformity at an inclined river slope,which should be clarified.Hence,a three-dimensional(3-D)hydrodynamic and particle-tracking model was developed with the Open Source Field Operation and Manipulation(OpenFOAM),and the model was validated with physical model tests for 90° lateral withdrawal from an inclined side bank.The flow fields,withdrawal sources,and division widths were investigated with different intake bottom elevations,withdrawal discharges,and main channel velocities.This study showed that under inclined side bank conditions,water entered the intake at an oblique angle,causing significant 3-D spiral flows in the intake rather than two-dimensional closed recirculation.A lower withdrawal discharge,a lower bottom elevation of the intake,or a higher main channel velocity could further strengthen this phenomenon.The average division width and turbulent kinetic energy were smaller under inclined side bank conditions than under vertical bank conditions.With a low intake bottom elevation,a low withdrawal discharge,or a high main channel velocity,the sources of lateral withdrawal were in similar ranges near the local inclined bank in the vertical direction.Under inclined slope conditions,sediment deposition near the intake entrance could be reduced,compared to that under vertical slope conditions.The results provide hydrodynamic and sediment references for engineering designs for natural rivers with inclined terrains.

Lateral withdrawalHydrodynamic characteristicsParticle trackingInclined river slopeBottom elevation of intakeOpenFOAM

Wei He、Si-yuan Feng、Jian Zhang、Hong-wu Tang、Yang Xiao、Sheng Chen、Chun-sheng Liu

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College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China

State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Hohai University,Nanjing 210098,China

Collaborative Innovation Center on Water Safety and Water Science,Hohai University,Nanjing 210098,China

National Natural Science Foundation of ChinaNatural Science Foundation of Jiangsu ProvinceKey Laboratory of Water Grid Project and Regulation of Ministry of Water Resources

52379061BK20230099QTKS0034W23292

2024

10.1016/j.wse.2023.11.004

水科学与水工程
河海大学

水科学与水工程

CSTPCDEI
影响因子：0.432
ISSN：1674-2370
年,卷(期)：2024.17(2)
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