The Three-Dimensional Wave-Induced Current Field: An Analytical Model

Abstract

Wave-induced currents play a critical role in coastal dynamics, influencing sediment transport and shaping bottom topography. Traditionally, long- and cross-shore currents in coastal zones were analyzed independently, often with two-dimensional models for longshore currents and undertow being used. The introduction of quasi-three-dimensional models marked a significant advancement toward a more holistic understanding. Despite recent proposals for fully three-dimensional models, none have achieved widespread acceptance, primarily due to challenges in accurately capturing depth-dependent radiation stress. This paper presents an innovative analytical model advocating for comprehensive three-dimensional approaches in coastal hydrodynamics. The model, based on novel simplification rules, refines relationships governing turbulent stress tensors and provides valuable insights into wave-induced stresses. It offers analytical solutions for both homogeneous and general coastal zones, laying the foundation for future advancements in numerical modeling techniques.

Sensitivity Simulations of Wind-driven Water Circulation in İzmit Bay

“…In this study, we examined the direct effect of wind on circulation, as in the studies mentioned above. On the other hand, wave-induced processes, like Stokes drift, 3D radiation stress, vortex force, and wave-breaking-induced near-shore circulation in coastal bays, lagoons, inlets, and lakes, are also noteworthy, as described in [40][41][42][43][44].…”