TY - JFULL AU - T. Esmaeili and A. A. Dehghani and A. R. Zahiri and K. Suzuki PY - 2009/11/ TI - 3D Numerical Simulation of Scouring around Bridge Piers (Case Study: Bridge 524 Crosses the Tanana River) T2 - International Journal of Civil and Environmental Engineering SP - 421 EP - 426 VL - 3 SN - 1307-6892 UR - https://publications.waset.org/pdf/10046 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 34, 2009 N2 - Due to the three- dimensional flow pattern interacting with bed material, the process of local scour around bridge piers is complex. Modeling 3D flow field and scour hole evolution around a bridge pier is more feasible nowadays because the computational cost and computational time have significantly decreased. In order to evaluate local flow and scouring around a bridge pier, a completely three-dimensional numerical model, SSIIM program, was used. The model solves 3-D Navier-Stokes equations and a bed load conservation equation. The model was applied to simulate local flow and scouring around a bridge pier in a large natural river with four piers. Computation for 1 day of flood condition was carried out to predict the maximum local scour depth. The results show that the SSIIM program can be used efficiently for simulating the scouring in natural rivers. The results also showed that among the various turbulence models, the k-ω model gives more reasonable results. ER -