Wash waves generated by high speed displacement ships

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• 作者：Li-lan Zhou ; Gao Gao ; R. H. M. Huijsmans
• 关键词：wash waves ; wave generation model ; wave spectrum method ; Boussinesq type equation wave model ; motions of moored ship
• 刊名：China Ocean Engineering
• 出版年：2015
• 出版时间：October 2015
• 年：2015
• 卷：29
• 期：5
• 页码：757-770
• 全文大小：568 KB
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• 作者单位：Li-lan Zhou (1) (2)
  Gao Gao (2)
  R. H. M. Huijsmans (3)
  
  1. Key Laboratory of High Performance Ship Technology Ministry of Education, Wuhan University of Technology, Wuhan, 430063, China
  2. School of Transportation, Wuhan University of Technology, Wuhan, 430063, China
  3. Delft University of Technology, Delft, The Netherlands
  
• 刊物类别：Engineering
• 刊物主题：Oceanography
  Chinese Library of Science
  Offshore Engineering
  Geoengineering, Foundations, Hydraulics
  
• 出版者：Chinese Ocean Engineering Society, co-published with Springer

文摘

It is difficult to compute far-field waves in a relative large area by using one wave generation model when a large calculation domain is needed because of large dimensions of the waterway and long distance of the required computing points. Variation of waterway bathymetry and nonlinearity in the far field cannot be included in a ship fixed process either. A coupled method combining a wave generation model and wave propagation model is then used in this paper to simulate the wash waves generated by the passing ship. A NURBS-based higher order panel method is adopted as the stationary wave generation model; a wave spectrum method and Boussinesq-type equation wave model are used as the wave propagation model for the constant water depth condition and variable water depth condition, respectively. The waves calculated by the NURBS-based higher order panel method in the near field are used as the input for the wave spectrum method and the Boussinesq-type equation wave model to obtain the far-field waves. With this approach it is possible to simulate the ship wash waves including the effects of water depth and waterway bathymetry. Parts of the calculated results are validated experimentally, and the agreement is demonstrated. The effects of ship wash waves on the moored ship are discussed by using a diffraction theory method. The results indicate that the prediction of the ship induced waves by coupling models is feasible. Keywords wash waves wave generation model wave spectrum method Boussinesq type equation wave model motions of moored ship