Water Wave Interaction of Twin Large Scale Caissons with a Small Gap Between

AbstractA reduced two-dimensional source distribution method is used for systematic computations on wave interaction of twin vertical cylinders with rectangular sections aligned with small gap between in order to get a clear fundamental view of small gap influence to the force response on potential very large coastal and marine structures. Strong hydrodynamic interaction between caissons with small gap is observed and sharp peak force responses are proved in the paper by both numerical evidence and theoretical verification due to newly discovered narrow open channel resonant phenomena. This strong interaction feature has its own important practical significance for design of links of modules for the large structure and attentions on terms of work for linking the modules. And moreover, the importance is also closely related to hydro-elasticity analyses for the very large structures, in which local loads may be as important as integrated loads.Keywords: Wave-structure interactiontwin caissons with small gapnarrow open channel resonancevery large coastal and marine structures