Journal of Marine Science and Application

, Volume 16, Issue 3, pp 276–285 | Cite as

A multi-domain boundary element method to analyze the reflection and transmission of oblique waves from double porous thin walls

  • Yamina Bakhti
  • Nadji Chioukh
  • Benameur Hamoudi
  • Mohamed Boukhari
Article
  • 12 Downloads

Abstract

In the present paper, we examine the performance of an efficient type of wave-absorbing porous marine structure under the attack of regular oblique waves by using a Multi-Domain Boundary Element Method (MDBEM). The structure consists of two perforated vertical thin barriers creating what can be called a wave absorbing chamber system. The barriers are surface piercing, thereby eliminating wave overtopping. The problem of the interaction of obliquely incident linear waves upon a pair of perforated barriers is first formulated in the context of linear diffraction theory. The resulting boundary integral equation, which is matched with far-field solutions presented in terms of analytical series with unknown coefficients, as well as the appropriate boundary conditions at the free surface, seabed, and barriers, is then solved numerically using MDBEM. Dissipation of the wave energy due to the presence of the perforated barriers is represented by a simple yet effective relation in terms of the porosity parameter appropriate for thin perforated walls. The results are presented in terms of reflection and transmission coefficients. The effects of the incident wave angles, relative water depths, porosities, depths of the walls, and other major parameters of interest are explored.

Keywords

oblique waves porous breakwater perforated thin walls boundary element method reflection transmission wave energy dissipation 

双层多孔薄壁结构在斜浪环境中的波浪反射与透射分析的多域边界元法研究

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Copyright information

© Harbin Engineering University and Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  • Yamina Bakhti
    • 1
  • Nadji Chioukh
    • 1
    • 2
  • Benameur Hamoudi
    • 1
  • Mohamed Boukhari
    • 1
  1. 1.Department of Maritime EngineeringUniversity of Science and Technology MBOranAlgeria
  2. 2.Department of Civil EngineeringUniversity of Djillali LiabesSidi Bél-AbbésAlgeria

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