Abstract
Diffraction of solitary waves around a group of dual porous cylinders consisting of a thin and porous outer cylinder circumscribing an impermeable inner cylinder is investigated analytically based on the eigenfunction expansion method. The present formulation is an extension of the work of Zhong and Wang (2006), wherein; the interaction of solitary waves with a single concentric porous cylinder system was studied. This paper aims at investigating the influence of multiple interactions between the cylinders in a group on the hydrodynamic wave forces, wave run-up and free-surface elevation in their vicinity. Further, the study focuses on the variation of the forces on the individual cylinders within the group compared to that on isolated cylinders.
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