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Modeling of internal wave generation near a shelf slope by ocean finite element method

  • Lee, Kwi-Joo (Department of Naval Architecture & Ocean Engineering, Chosun University) ;
  • Joa, Soon-Won (Department of Naval Architecture & Ocean Engineering, Chosun University) ;
  • Eom, Ki-Chang (Department of Naval Architecture & Ocean Engineering, Chosun University)
  • Published : 2006.02.28

Abstract

The 3-D modeling of ocean finite element method(OFEM) using $k-{\varepsilon}$ turbulent model and tetrahedron grids has been used to investigate the internal wave generation during the expansion of the deep water from the open sea to the shelf with a simple shape, which can be widely used in the fields of submarine development, ocean environment and meteorology, etc. In this paper, the detailed configuration of internal wave with its length and height and also the distribution of salinity and turbulent kinematic energy, etc. were derived. It is hoped that this OFEM method can be successfully applied to the numerical calculation of internal wave for and the oceanographic problems (tidal flows around underwater hill, plateau, Georges Bank, etc.) and ocean engineering problems(flow past artificial sea reefs) in future.

References

  1. Belevich, M., 1996. The Effect of Thermal Stratification on the Structure of the Wave Boundary Layer. Izv. Atmos. Ocean. Phys., .32, 397 - 401
  2. Belevich, M., A. Safray, K.J. Lee and K.H. Kim, 2002. Wave boundary layer: Parameterization technique and its proof. Int. J. Ocean. Eng. and Tech., 16(2), 1020
  3. Flather, R.A., 1976. A tidal model of the Northwest European continental - shelf. Mem. Soc. R. Sci. Liege, Ser. 1-6, 10, 141-164
  4. Fletcher, C.A.J, 1991. Computational techniques for fluid dynamics. Springer - Verlag, 2, 552
  5. Kim, D.Y. and J.W. Kim, On the characteristics of internal waves between two stratified fluid layers. The Society of Naval Architects of Korea, 34(3), 1 - 8
  6. Mahadevan, A., Oliger J. and Street R., 1996, A non hydrostatic mesoscale ocean model. Jour. of Phys. Oceangr. 26 1868 - 1880
  7. Muller, P., G. Holloway, F. Henyey and N. Pomphrey, 1986. Non -linear interactions among internal gravity waves. Reviews of Geophysics, 24, 493 - 536 https://doi.org/10.1029/RG024i003p00493
  8. Norrie, D.H., D. Vries, 1978. An introduction to finite element analysis. Academic Press, 112
  9. Orlanski, I., 1976, A simple boundary condition for unbounded hyperbolic flows. J. Comput. Phys., 21, 251-269 https://doi.org/10.1016/0021-9991(76)90023-1
  10. Safray, A.S. and I.V. Tkatchenko, 2001. Modeling the expansion of deep - sea water along area of arctic marginal sea. Research Activities in Atmospheric and Ocean Modeling, Rep. 31, 8. I 7, WMO/TD? No. 1064
  11. Schachverdi G.G., 1993. The impact interaction of ship construction with fluid. Sudostoenie, St. Petersburg, 256
  12. Small, J., Z. Hallock, G. Pavey and J. Scott, 1999. Observation of large amplitude internal waves at the marlin Shelf edge. Continental Shelf Research, 19, 1389 - 1436 https://doi.org/10.1016/S0278-4343(99)00023-0