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Wave generation by the falling rock in the two-dimensional wave tank

Mo Jun He Hai-Lun Song Jin-Bao Liu Yong-Jun

Wave generation by the falling rock in the two-dimensional wave tank

Mo Jun, He Hai-Lun, Song Jin-Bao, Liu Yong-Jun
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  • Abstract views:  3832
  • PDF Downloads:  817
  • Cited By: 0
Publishing process
  • Received Date:  06 December 2008
  • Accepted Date:  15 January 2009
  • Published Online:  05 May 2009

Wave generation by the falling rock in the two-dimensional wave tank

  • 1. (1)海军潜艇学院,青岛 266071; (2)河海大学海岸灾害及防护教育部重点实验室,南京 210098;中国科学院海洋研究所,青岛 266071;中国科学院海洋环流与波动重点实验室,青岛 266071; (3)中国科学院海洋研究所,青岛 266071;中国科学院海洋环流与波动重点实验室,青岛 266071; (4)中国科学院海洋研究所,青岛 266071;中国科学院海洋环流与波动重点实验室,青岛 266071;中国科学院研究生院,北京 100049

Abstract: Wave generation by the falling rock in the two-dimensional wave tank is experimentally and numerically studied, where the numerical model utilizes the boundary element method to solve the fully nonlinear potential flow theory. The wave profiles at different times are measured in the laboratory, which are also used to test the numerical model. Comparisons show that the experimental and numerical results are in good agreement, and the numerical model can be used to simulate the wave generation due to the submarine rock falling. Further numerical tests on the influences of the rock size, density, initial position and the falling angle on the wave elevation of the generated waves are performed, respectively. The results show that the size and density of the rock have strong effects on the maximum elevation of the generated wave, while the effects of the initial position and the falling angle of the rock are also significant. When the size or the density of the rock increases, the maximum elevation of the generated wave increases. The same effect on the generated wave would be produced if the initial position of the rock becomes closer to the surface, or the falling angle between the falling route and the vertical direction turns larger. In addition, the present numerical tests reveal that the submarine rock falling provides a new generation method for the breaking wave in the wave tank.

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