Single-phase SPH modelling of plunge pool dynamic pressures at a near-prototype scale

In dam engineering, plunge pools are critical terminal structures, often causing substantial scour that poses risks at the foot of the dam. Scouring near dams is a nationwide concern, as it has led to more dam failures than any other causes. Thus, evaluating hydrodynamic pressures from impinging jets is crucial for pool floor stability design. This study utilized physical models, experimental facilities, and computational fluid dynamics (CFD) models to assess hydrodynamic pressures at Yusufeli Dam. Results indicate that Flow 3D analysis and empirical equations yield similar pressure readings on the bottom of the plunge pool, one-third of the free fall pressures of the physical model. ThepPhysical studies using Froude similitude revealed drastically lower Reynolds numbers compared to prototype flows, affecting turbulence and air entrance simulation. Consequently, model-scale resistance issues dominate physical model calculations, introducing uncertainty. This work underscores the importance of carefully assessing hydrodynamic pressures on plunge pool floors, as modeling approaches significantly impact results. Findings from this study can enhance plunge pool design and stability in dam engineering, promoting safer structures.

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Single-phase SPH modelling of plunge pool dynamic pressures at a near-prototype scale

Cited by 3 publications

References 50 publications

Enhanced Physically Based Models for Pressure Characteristics at Plunge Pool Bottoms

Enhanced Physically Based Models for Pressure Characteristics at Plunge Pool Bottoms

Air–water flows

Assessing the pressure variation in the plunge pool of Yusufeli dam

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