CFD-based investigation of temporal clear-water local scour around a cylindrical bridge pier using REEF3D

  • Mai Quang Huy

    University of Transport and Communications, No 3 Cau Giay Street, Hanoi, Vietnam
  • Nguyen Dang Phong

    University of Transport and Communications, No 3 Cau Giay Street, Hanoi, Vietnam
Email: mqhuy@utc.edu.vn
Từ khóa: bridge pier scour, clear-water scour, CFD, morphodynamic modeling, REEF3D, sediment transport

Tóm tắt

Local scour around bridge piers is a major threat to foundation stability, and accurate prediction of its temporal development is important for bridge safety assessment. This study investigates clear-water local scour around a cylindrical bridge pier using an existing laboratory dataset and three-dimensional CFD-based morphodynamic simulation with REEF3D. The experimental dataset comprises 21 time-resolved scour-depth measurements collected over a 330-min test. The numerical model solves the incompressible RANS equations with the standard k- turbulence model and couples the hydrodynamic solution with the Engelund–Fredsøe bed-load formulation and movable-bed evolution. Mesh-resolution and critical Shields parameter sensitivity analyses were conducted to identify a suitable calibrated configuration. The selected configuration reproduced the measured temporal scour development with satisfactory agreement and captured the characteristic progression from rapid initial erosion through transitional scour growth to gradual stabilization toward quasi-equilibrium. The results indicate that a properly calibrated REEF3D framework can reproduce the temporal development of clear-water pier scour with reasonable accuracy, although broader independent validation is required before general engineering application.

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16/08/2026
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06/11/2026
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11/11/2026
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15/11/2026
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Kiểu trích dẫn
Mai Quang, H., & Nguyen Dang, P. (1794675600). CFD-based investigation of temporal clear-water local scour around a cylindrical bridge pier using REEF3D. Tạp Chí Khoa Học Giao Thông Vận Tải, 77(9), 1275-1290. https://doi.org/10.47869/tcsj.77.9.11