Numerical study of local scour around bridge pier with collar using flow-3D software

The scouring of sediments around bridge foundations in the riverbed leading to collapse remains a significant problem, causing both economic losses and risking human lives. This investigation focuses on studying the effects of collar for reducing scour around bridge piers by using two different types of bridge pier shapes namely circular and nosed pier. In recent years, three-dimensional simulation methods for scouring have gained popularity due to advancements in computer capabilities and software, enabling the widespread utilization of Computational Fluid Dynamics (CFD) to analyze scour phenomena in various industrial and environmental applications. A numerical model is created for bridge pier with collar to compare and validate the results obtained from the experimental study of Ismael A. et al., in 2015. Findings shows that local scour is reduced by using collared bridge pier.