Experiments on the Bragg reflection of waves by different types of artificial bars

T. W. Hsu*, Hsien-Kuo Chang, L. H. Tsai, Y. X. Li

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

Abstract

Experiments were performed to demonstrate Bragg reflection between linear gravity wave and artificial bars. Higher-harmonic and sub-harmonic Bragg-reflections have been observed in a wave flume. Three different artificial bars with rectangular, triangle and sinusoidal shapes were placed discretely on the seabed to make a measurement of Bragg reflection. A series of experimental conditions including the number of bars, the periodic bar spacing, the footprint of the bar, the bar height and various wave conditions were tested. Key parameters affecting Bragg reflection were discussed. The experimental data are compared with the predictions of a bar theory and a numerical model.

Original languageEnglish
Pages601-606
Number of pages6
StatePublished - 1 Jan 2001
Event11th (2001) International Offshore and Polar Engineering Conference - Stavanger, Norway
Duration: 17 Jun 200122 Jun 2001

Conference

Conference11th (2001) International Offshore and Polar Engineering Conference
CountryNorway
CityStavanger
Period17/06/0122/06/01

Keywords

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

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