Bragg reflection of waves by different shapes of artificial bars

Tai W. Tsu, Hsien-Kuo Chang, Li Hung Tsai

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Experiments are performed in a wave flume lo demonstrate the Bragg reflection of linear gravity waves by artificial bars. Three different artificial bars with rectangular, triangular and rectified cosinoidal shapes are placed discretely on the seabed for measurement of the Bragg reflection. A series of experimental conditions including the number of bars, the periodic bar spacing, the water depth and various wave conditions are tested. Key parameters influencing the Bragg resonances are investigated. The experimental data are compared with the values from both theoretical and numerical models. Some key parameters have proved to be effective in describing the primary resonances. Predictive equations of the characteristics for the Bragg reflection are proposed in this paper.

Original languageEnglish
Pages (from-to)343-358
Number of pages16
JournalChina Ocean Engineering
Volume16
Issue number3
StatePublished - 1 Sep 2002

Keywords

  • Artificial bars
  • Bragg reflection
  • Higher-harmonic resonance
  • Waves

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