Diffraction of Water Waves with Arrays of Vertical Cylinder

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Diffraction of Water Waves with Arrays of Vertical Cylinder

Original Article, B3
 Shiravani Gh., Sadeghi K.
  Journal. Civil Eng. Urban. 2(1): 10-16. 2012

ABSTRACT: Based on Linton and Evans (1990) analytical solution, the diffraction of linear water waves by N bottom mounted circular cylinders has been investigated. In order to study the first order interaction between cylinders, the boundary condition on each cylinder surface due to the scattered waves of all other cylinders is taken into account and relations for calculation of forces acting on cylinders are derived. This paper is mainly concerned with vertical cylinders located at vertices of a square. For this configuration the phenomenon of near-trapping mode and the wavelength associated with it is considered and for different wave length the force acting on each cylinder is determined. Also the wave surface elevation around cylinders which can be legs of an offshore platform or piles of a floating island is determined and using MATLAB programming the results are plotted in three dimensional form.
Keywords: Diffraction of water waves; Trapped modes; Hydrodynamic interaction; Array of vertical cylinders.

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