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Numerical Simulation Study on Flow Reduction Effect of Hexagonal Multi-cellular Revetment Blocks
Jianguo Zheng , Wenbo Li, Wei Tao, Guohui Xu and Bo Hong
Multi-cellular revetment blocks exhibit excellent flow reduction and sediment trapping performance and have been gradually applied in ecological shoreline engineering in recent years. In this study, the flow velocity, turbulent kinetic energy, and sediment erosion changes in a new type of hexagonal multi-cellular block and frame grid fence were analyzed using FLOW-3D numerical simulations. The results showed that compared to traditional frame grid fences, the hexagonal multi-cellular blocks exhibited stronger flow reduction and turbulence suppression effects. In specific locations, the flow velocity and turbulent kinetic energy in the multi-cellular blocks were reduced by 58 and 75%, respectively. The weak flow velocity and low turbulent kinetic energy in the hexagonal multi-cellular blocks greatly reduced sediment scouring, making it more conducive for habitats, organism reproduction, and the construction of coastal ecological environments.
Keywords: revetment blocks, hexagonal multi-cellular blocks, FLOW-3D, hydrodynamic conditions, sediment scour