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| Interaction of the short-crested waves with double-layered porous cylindrical columns |
| Received:July 05, 2011 Revised:November 28, 2011 |
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| DOI：10.7511/jslx20125002 |
| KeyWord:scaled boundary finite-element method short-crested wave double-layered porous cylindrical columns wave diffraction wave-structure interaction |
| Author | Institution |
| 刘俊 |
大连理工大学 海岸和近海工程国家重点实验室, 大连 ;大连理工大学 建设工程学部 水利工程学院, 大连 |
| 林皋 |
大连理工大学 海岸和近海工程国家重点实验室, 大连 ;大连理工大学 建设工程学部 水利工程学院, 大连 |
| 李建波 |
大连理工大学 海岸和近海工程国家重点实验室, 大连 ;大连理工大学 建设工程学部 水利工程学院, 大连 |
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| Abstract: |
| This paper describes the development of the Scaled Boundary Finite Element Method (SBFEM) for the solution on short-crested wave interaction with double-layered porous cylindrical columns.The entire computational domain is divided into several sub-domains including two bounded domains and an unbounded domain.Through a transformation from Cartesian coordinates to Scaled coordinates,a new variational principle formulation is used to derive the SBFEM equations in each sub-domain,which reduces spatial dimension by one,analytical procedure is applied in the reduced direction,and only the boundary of the exterior cylinder needs be discretized.Comparison between the present numerical solutions with the analytical one is made.The results show that the present method yields excellent results with quite few nodes and quick convergence.The influence of varying the relative wave numberka,radius ratioa/bbetween the two cylinders and the porous coefficients of the interior and exterior cylinders on the system hydrodynamics,including the wave force,wave run-up,and diffracted wave contour is examined,and extensive results on them are presented.The present results are of practical significance to the hydrodynamic analysis and design for the double-layered porous cylinders. |
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