圆柱形桥墩附近三维流场及河床局部冲刷分析

Analysis of Three-Dimensional Flow Field and Local Scour of Riverbed Around Cylindrical Pier

应用大型流场分析软件FLUENT,采用现代三维运动界面追踪技术VOF(volume of fluid)方法和标准k-ε模型,耦合求解对桥墩附近三维流场进行了合理模拟,得出了剪应力的分布特征,为河床冲刷分析和合理防护措施的制定奠定了基础.

Modem 3D moving interface tracing technology-volume of fluid （VOF） method and standard k-ε model which are integrated in FLUENT, are jointly used in the present study to numerically simulate the flow field in the vicinity of a circular pier. The calculated results are in good agreement with experimental data or theoretical results obtained by other researchers. The distribution of shear stress is also obtained from the numerical simulation, consequently laying a foundation for the analysis of riverbed scour and establishment of rational preventive measures.