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Structural Engineering and Mechanics
  Volume 21, Number 1, September10 2005, pages 53-66
DOI: http://dx.doi.org/10.12989/sem.2005.21.1.053
 


Wave scattering among a large number of
floating cylinders
Masashi Kashiwagi

 
Abstract
    When a large number of identical cylinders are placed in an array with equal separation distance, near-resonant phenomena may occur between cylinders at critical frequencies, and cause large wave forces on each element of the array. In this paper, 64 truncated circular cylinders arranged in 4 rows and 16 columns are considered to check occurrence of near-resonant phenomena and performance of theoretical predictions based on the potential flow. Experiments are conducted in head waves to measure the wave elevation along the longitudinal centerline of the model, and measured results are compared with numerical ones. Attention is focused on the spatial variation of the wave amplitude around the first near-trapped-mode frequency.
 
Key Words
    hydrodynamic interaction; trapped mode; wave transmission; spatial distribution; truncated circular cylinders.
 
Address
Research Institute for Applied Mechanics, Kyushu University, 6-1 Kasuga-koen, Kasuga-city, Fukuoka 816-8580, Japan
 

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