This research explores how a circular collar with tilt angle (counterclockwise around the direction of channel cross-section) could affect local scour depth single cylindrical pier in clear-water based on Large Eddy Simulation (LES) six cases. The results show that horizontal is best for reducing depth. With increases angle, effect decreases gradually and even counterproductive at equilibrium. ...

The complex flow structure around bridge piers is challenging for both experimental and numerical studies. Therefore, investigating the capabilities of Computational Fluid Dynamics (CFD) tools in resolving mechanism sediment entrainment into out scour hole remains a task. In this study, depth an oblong pier bed shear stress distributions time space were numerically investigated using tool Sedim...

Abstract This study presents the results of 32 laboratory experiments on local scour at a single pile and 1 × 4 group for both uniform non-uniform sediments under clear water conditions. The present aims to evaluate effects different sediment beds made up mixtures sand gravel (four-bed configurations) in d 50 (1–3.5 mm) gradation (1.4–3) ranges depth flow discharges depths. Further, findings ar...

Scour around bridge piers is considered as one of the major factors which causes failure bridges in United States. An undetected scour can affect stability bridge, eventually leading to collapse bridge. The experimental investigation a pier using non-contact measuring method carried out this research. A green laser-based ranging technique performed on prefabricated hole study influencing abilit...