Experimental Characterization of the Flow Field around Oblong Bridge Piers

The prediction of scour evolution at bridge foundations is utmost importance for engineering design and infrastructures’ safety. complexity the scouring inherent flow field result separation generation multiple vortices further magnified due to dynamic interaction between movable bed throughout development a hole. In experimental environments, current approaches characterization rely mainly on measurements beds rather than characterization. This paper investigates turbulent around oblong pier models in well-controlled laboratory environment, understanding mechanisms responsible current-induced scour. study was based an campaign planned velocity models, different widths, carried out large-scale tilting flume. Measurements stream-wise, cross-wise vertical distributions, as well Reynolds shear stresses, were performed both flat eroded stages with high-resolution acoustic velocimeter. time-averaged values stress are larger presence developed hole corresponding configuration.