An efficient scaled boundary FEM model for wave interaction with a nonuniform porous cylinder

Hao Song, Longbin Tao

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The scaled boundary finite-element method (SBFEM) by Tao et al. (Comput. Methods Appl. Mech. Engrg 2007; 197:232-242) is only applicable for wave scattering problems by a structure of homogenous material. In this paper, the SBFEM is extended to deal with the interaction of water waves and porous offshore structure with a partially solid wall or opening. The cylindrical structure is considered as a circular cylinder of anisotropic material in the form of variable porosity. A central feature of the newly extended method is that the non-homogenous term caused by the complex configuration of the structure is processed by introducing a variable porous-effect parameter G. This leads to the final scaled boundary finite-element equation is still homogenous and can be solved in a similar manner. The modified SBFEM thus remains a semi-analytical fundamental-solution-less method. Numerical experiments in water wave interaction with a typical coastal/offshore structure-a cylinder with a partially solid wall or opening attest to the efficacy and accuracy of the proposed approach.

LanguageEnglish
Pages96-118
Number of pages23
JournalInternational Journal for Numerical Methods in Fluids
Volume63
Issue number1
DOIs
Publication statusPublished - 20 May 2009

Fingerprint

Scaled Boundary Finite-element Method
Wave Interaction
Offshore Structures
Offshore structures
Water waves
Water Waves
Finite element method
Anisotropic Material
Wave Scattering
Circular Cylinder
Scattering Problems
Circular cylinders
Fundamental Solution
Porosity
Efficacy
Numerical Experiment
Model
Scattering
Finite Element
Configuration

Keywords

  • nonuniform porous cylinder
  • scaled boundary finite-element method
  • short-crested wave
  • unbounded domain
  • wave diffraction
  • wave-structure interaction

Cite this

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An efficient scaled boundary FEM model for wave interaction with a nonuniform porous cylinder. / Song, Hao; Tao, Longbin.

In: International Journal for Numerical Methods in Fluids, Vol. 63, No. 1, 20.05.2009, p. 96-118.

Research output: Contribution to journalArticle

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