LIU Yunguo, GUO Yinghui, LIU Shuaishuai, LI Junfeng, YE Naihao. Genetic variability of half-smooth tongue sole Cynoglossus semilaevis populations using microsatellite markers[J]. Acta Oceanologica Sinica, 2011, (3): 76-83. doi: 10.1007/s13131-011-0121-8
Citation: CHEN Jie, JIANG Changbo, HU Shixiong, HUANG Wenwei. Numerical study on the characteristics of flow field and wave propagation near submerged breakwater on slope[J]. Acta Oceanologica Sinica, 2010, (1): 88-99. doi: 10.1007/s13131-010-0011-5

Numerical study on the characteristics of flow field and wave propagation near submerged breakwater on slope

doi: 10.1007/s13131-010-0011-5
  • Received Date: 2008-12-19
  • Rev Recd Date: 2009-07-14
  • In this study, characteristics of flow field and wave propagation near submerged breakwater on a sloping bed are investigated with numerical model. The governing equations of the vertical twodimensional model are Reynolds Averaged Navier Stokes equations. The Reynolds stress terms are closed by a nonlinear k-ε turbulence transportation model. The free surface is traced through the PILC-VOF method. The proposed numerical model is verified with experimental results. The numerical result shows that the wave profile may become more asymmetrical when wave propagates over breakwater. When wave crest propagates over breakwater, the anticlockwise vortex may generate. On the contrary, when wave hollow propagates over breakwater, the clockwise vortex may generate. Meanwhile, the influenced zone of vortex created by wave crest is larger than that created by wave hollow. All the maximum values of the turbulent kinetic energy, turbulent dissipation and eddy viscosity occur on the top of breakwater. Both the turbulent dissipation and eddy viscosity increase as the turbulent kinetic energy increases. Wave energy may rapidly decrease near the breakwater because turbulent dissipation increases and energy in lower harmonics is transferred into higher harmonics.
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