Interaction between obliquely incident waves and an infinite array of multi-chamber perforated caissons

Abstract

This study examines the interaction of obliquely incident waves with a breakwater consisting of an infinite array of uniform multi-chamber perforated caissons with partition walls. Based on the linear potential theory, an analytical solution of the problem is developed by means of the matched eigenfunction expansion method. The periodicities of the breakwater and the incident waves are both incorporated into the solution. Several limiting cases are also examined to validate the newly developed solution. Three parameters of engineering interests, the reflection coefficient, the dimensionless total wave force in the normal direction of the breakwater and the dimensionless total wave force acting on the partition walls, are calculated and carefully examined. This study may give a better understanding of the hydrodynamic performance of multi-chamber perforated caissons. Some useful results are also presented to practical engineering.

Scattering Study of a Composite Breakwater Placed in Front of an Impermeable Back Wall under the Action of Water Waves

“…Li et al [13] investigated the reflection of oblique incident waves from breakwaters consisting of a double-layered perforated wall and an impermeable back wall. Liu and Li [14], Liu et al [15], Liu et al [16], and Mohapatra and Sahoo [17] also conducted studies on other models of impermeable and permeable types. In addition, porous structures placed on a two-layer fluid/uneven seabed in front of an impermeable back wall have also been studied (Behera and Sahoo [18]; Chang and Tsai [19]).…”

Interaction analysis between waves and perforated caisson using the revised smoothed particle hydrodynamics method and finite element method

“…It can be clearly seen that many significant achievements have been made by scholars, but in previous analytical solutions for action on perforated caissons, most studies focused on reflection and stability of perforated caisson. 14,[18][19][20][21][22] Few literature works focused on stress changes on the perforated plate, which is thinnest of the caisson. One of the contributions in this article is that the stress changes of perforated plates are fully considered, as well as its corresponding factors, such as the relative top cover height gap s/L or the relative width of dissipation chamber B/L of perforated caisson.…”