Wave- and current-dominated combined orthogonal flows over fixed rough beds

摘要

Orthogonal wave-current interaction often occurs in coastal regions, when waves approach the shoreline nearorthogonally and longshore currents are present. Notwithstanding its wide relevance, this phenomenon is far from being understood to a full extent, especially in the presence of bed roughness. Indeed the effects on the apparent roughness due to the combination of steady currents and surface waves propagating at right angles are still a matter of debate, both in the current and in the wave dominated cases.