Hydrodynamic Analysis of Coastal Structures

Hydrodynamic analysis of coastal structures encompasses the study of wave–structure interactions, the assessment of wave forces and moments, and the prediction of structural response under a variety of sea conditions. Core objectives include minimising wave transmission, controlling reflection and dissipation, and ensuring stability and serviceability of breakwaters, barriers, jetties and floating foundations. Methods range from analytical solutions of linear and weakly nonlinear wave theories to advanced numerical techniques such as boundary element, finite-element and finite-volume models, often validated by physical experiments. Recent advances address climate-driven challenges, including sea-level rise and intensifying storm events, by refining resonance predictions, optimising porosity distributions and exploring novel periodic and metamaterial concepts to attenuate or redirect wave energy. The field’s global significance is underscored by applications in port protection, coastal defence and sustainable offshore installations.

Research from Nature Portfolio

Recent work has unveiled a new class of surface-guided waves known as generalised Rayleigh–Bloch waves along one-dimensional finite lattices of scatterers. Laboratory experiments in an acoustic analogue confirmed discrete radiative modes above the classical cut-off, unifying the nomenclature between infinite periodic systems and finite arrays. These insights into lattice-induced dispersion and attenuation offer promising design principles for periodic coastal defences, suggesting that appropriately configured rows of vertical elements could selectively trap or channel wave energy, thereby enhancing the performance of breakwater arrays and shoreline protection schemes.

Hydrodynamic Analysis of Coastal Structures publication trend

The graph below shows the total number of articles in hydrodynamic analysis of coastal structures across all publications each year (not limited to Nature Index journals).

Technical terms

Hydrodynamic coefficients: Quantitative measures—added mass, damping and excitation—describing the interaction forces and moments between waves and structures.

Boundary element method (BEM): A numerical approach solving potential flow problems by formulating integral equations over the surface of the structure, reducing dimensionality and computational cost.

Porous barrier: A coastal structure permitting partial fluid flow through its body to dissipate wave energy via drag and inertia within the pore network.

Rayleigh–Bloch waves: Surface-confined wave modes propagating along periodic arrays of scatterers, characterised by lattice-induced dispersion and localisation properties.

References

1. Acoustic lattice resonances and generalised Rayleigh–Bloch waves. Communications Physics (2025).
2. Comparison of analytical and numerical solutions for wave interaction with a vertical porous barrier. Ocean Engineering (2020).
3. A BEM model for wave forces on structures with thin porous elements. Journal of Fluids and Structures (2021).
4. Numerical and experimental modelling of wave interaction with fixed and floating porous cylinders. Ocean Engineering (2021).