Abstract: The functional trends of the local scour depth at a bridge pier in subcritical flow are discussed and related to flow and sediment parameters leading to a framework within which the scour depth under given conditions can ...

Abstract: The bed forms generated by the flow of water over alluvial beds are predominantly treated in terms of stability concepts. These generally postulate a constant wavelength, and describe the variation of amplitude. Yet, the ...

Abstract: Permeable pile groins have been built on the southern shores of the Baltic Sea in large numbers for a century and a half, yet no explanation has been found in the literature on how these function. It is shown that pile ...

Abstract: Some 30 years ago, John F. Kennedy laid the foundations for the description of the geometry of sand waves on stream beds by the potential flow model. Since then, the analysis has been extensively refined and extended, but ...

Abstract: Results of laboratory experiments concerning the development of scour around a cylindrical pier placed in a bed of cohesionless sediment overlain by an armoring layer of coarser sediment are presented. Both the armoring ...

Abstract: The results of laboratory experiments on the clear‐water local scour of cohesionless bed sediment at cylindrical piers are presented. Based on the data, equilibrium depth of local scour is related to the particle size ...

Abstract: The concept of unification, the opposite of branching theories used in biological sciences, is introduced as a new avenue to investigate the behavior of bed features in alluvial channels under unidirectional flow. The ...

Abstract: An experimental investigation of local scour at a nonuniform cylindrical pier is presented. A nonuniform pier is one for which the cross-sectional dimension varies over the length of the pier. In this study the pier comprised ...