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The Split-and-Settle approach, validated through physical model tests, effectively segregates flow into sediment-free and sediment-laden streams. Innovative methods were employed for introducing specific sediment concentrations and collecting depth-integrated samples. A three-dimensional numerical model, calibrated through experimental tests, was developed to simulate suspended sediment transport within a Split-and-Settle sand trap. The hydrodynamic model accurately replicated observed velocity profiles, though modeling sediment concentrations below the plate remained challenging. Velocity measurements revealed a 20% lower velocity below the plate due to its flow depth position, creating a 60/40 flow split. Sediment concentration was 80% higher beneath the plate, with resuspension suggested by pressure gradient flow. The model effectively manages substantial volumes of sediment-laden water, even under critical conditions, offering continuous operation with minimal maintenance, avoiding scour holes, and improving efficiency.

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  • Split-and-Settle concept: Investigates a Split-and-Settle approach using physical and 3D numerical modeling.

  • Novel sediment techniques: Introduces new methods for sediment concentration control and sampling.

  • Calibrated numerical model: Develops a validated model to optimize split plate placement for sediment management.

  • Hydrodynamic insights: Reveals flow velocity and sediment distribution patterns around the split plate.

ANSYS Fluent, computational fluid dynamics, physical modeling, sediment concentration, Split-and-Settle sand trap, velocity pathlines
© 2025 The Authors
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