Comparison of analytical and numerical solutions for wave interaction with a vertical porous barrier

Effect of bottom undulation for mitigating wave-induced forces on a floating bridge

A porous-wavemaker theory is developed to analyse small-amplitude surface waves on water of finite depth, produced by horizontal oscillations of a porous vertical plate. Analytical solutions in closed forms are obtained for the surface-wave profile, the hydrodynamic-pressure distribution and the total force on the wavemaker. The influence of the wave-effect parameter C and the porous-effect parameter G, both being dimensionless, on the surface waves and on the hydrodynamic pressures is discussed in detail.

A porous wavemaker theory

Wave interaction with a submerged floating tunnel in the presence of a bottom mounted submerged porous breakwater

The wave transformation due to the presence of stratified porous structure lying on flat seabed, elevated seabed, and stepped seabed is analyzed under the oblique wave incidence. The stratified por...

Significance of seabed characteristics on wave transformation in the presence of stratified porous block

Scattering of obliquely incident surface gravity waves by multiple porous barriers is studied in the presence of step type varying bottom topography. The bottom bed consists of a finite interval of uneven geometry which is connected by two semi-infinite intervals of uniform water depths. An array of porous barriers are located on water of uniform depth on the lee side of bottom variations. Using small amplitude wave theory and Darcy’s law for flow past porous structure, the physical problem is converted into a boundary value problem which is handled for solution using coupled eigenfunction expansion in uniform bottom regions and modified mild-slope equation in varying bottom region. Further, certain jump conditions are used for the conservation of mass flux at slope discontinuities in bottom profile. To understand the effect of variations in bottom topography on wave scattering by multiple porous barriers, physical quantities such as reflection and transmission coefficients, wave forces on the barriers are computed and analyzed for different values of depth ratio, varying bottom parameter, porous-effect parameter, incident wave angle, spacing between the barriers and slope length of varying bottom. In the presence of ripple bottom bed, effect of multiple porous barriers on Bragg scattering is analyzed. Certain drift in Bragg reflection is noticed due to propagation of oblique incident waves over step type ripple beds.

Effect of bottom topography on wave scattering by multiple porous barriers

Gravity wave interaction with a porous breakwater in a two-layer ocean of varying depth

Using potential flow theory, oblique wave scattering and trapping by a partial porous breakwater having finite width are studied under the assumption of small-amplitude water wave theory in

Surface Gravity Wave Interaction with a Partial Porous Breakwater in the Presence of Bottom Undulation

A problem of oblique wave scattering by a rectangular breakwater floating in water of uneven depth is solved by applying matched eigenfunction expansion method. Three positions of breakwater are co...

https://journals.sagepub.com/doi/pdf/10.1177/1475090219853748

S. Tabssum

Papers

Effect of bottom topography on wave scattering by multiple porous barriers

Gravity wave interaction with a porous breakwater in a two-layer ocean of varying depth

Surface Gravity Wave Interaction with a Partial Porous Breakwater in the Presence of Bottom Undulation

Oblique interaction between water waves and a partially submerged rectangular breakwater

Surface gravity wave interaction with a partial porous breakwater in a two-layer ocean having bottom undulations