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The Numerical Analysis of Jeju Harbor Flow Considering Effect of Seasonal Wind

  • Kim, Nam-Hyeong (Major of Civil and Environmental Engineering, Cheju National University) ;
  • Park, Ji-Hun (Harbor and Coastal Engineering, Sekwang Engineering Consultants) ;
  • Kang, Hyun-Woo (Littoral Draft Division, Port and Airport Research Institute)
  • Published : 2007.12.31

Abstract

The effect of seasonal wind on the tidal circulation in Jeju harbor was examined by using a numerical shallow water model. A finite element for analyzing shallow water flow is presented. The Galerkin method is employed for spatial discretization. Two step explicit finite element scheme is used to discretize the time function, which has advantage in problems treating large numbers of elements and unsteady state. The numerical simulation is compared with three cases; Case 1 does not consider the effect of wind, Case 2 and Case 3 consider the effect of summer and winter seasonal wind, respectively. According to result considering effect of seasonal wind, velocity of current vector shows slightly stronger than that of case 1 in the flow field. It can be concluded that the present method is a useful and effective tool in tidal current analysis.

Keywords

References

  1. Jung, T. S. and Kim, C. S.,(1992), 'A finite element hydrodynamic model for moving boundary problems', J. of Korean Soc. of Coastal and Ocean Eng., Vol.4, No.3, pp.146-155(In Korean)
  2. Kawahara, M., and Okamoto, T.(1976), 'Finite element analysis of steady flow of viscous fluid using stream function', Proc. JSCE., No. 247, pp. 123-135
  3. Kawahara, M.(1977), 'Periodic galerkin finite element method of unsteady flow of viscous fluid', Int. J. Num Meth Eng., Vol. 7, pp.1093-1105
  4. Kawahara, M., Hirano, H., Tsubota, K., and Inagaki, K.(1982), 'Selective lumping finite element method for shallow water flow', Int. J. Num. Meth. Flud, Vol. 2, pp.89-112 https://doi.org/10.1002/fld.1650020106
  5. Kawahara, M., and Umetsu, T.(1986), 'Finite element method for moving boundary problems in river flow', Int. J. Num Meth in Fluids, Vol. 6, pp. 365-389 https://doi.org/10.1002/fld.1650060605
  6. Kawahara, M., and Umetsu, T.(1988), 'Tow-step explicit finite element method for the spill-way flow using moving boundary technique', Computer Modelling in Ocean Engineering', pp 597-608
  7. Kim, N. H.(1995), 'An analysis of shallow water flow by two step explicit finite element scheme', J. of the Korean Society of Civil Eng., No.15, Vol.6, pp.1669-1677
  8. Kim, N. H.(1995), 'Analysis of Fluid by Finite Element Method, Wonchang Press', 268pp.(In Korean)
  9. Ministry of Maritime Affairs and Fisheries, National Oceanographic Research Institute. (2003), 'Tidal Current Charts on eastern sea of Jeju-do', 22 pp (In Korean)
  10. Ministry of Maritime Affairs and Fisheries, National Oceanographic Research Institute.(1998), 'Maline Environmental Atlas of Korea Waters', 45 pp (In Korean)
  11. Pinder, G. R., and Gray, W. G.,(1977), 'Finite Element Simulation in Surface and Subsurface Hydrology', Academic Press, New York
  12. Office of Hydrographic Affairs.(1993) 'Technical Reports of hydrography', Republic of Korea
  13. Peason, C. E., and Winter, D. F.(1977), 'On the calculation of tidal currents in homogeneous estuaries', J. Phys. Ocean, Vol. 7, No.6, pp. 520-531 https://doi.org/10.1175/1520-0485(1977)007<0520:OTCOTC>2.0.CO;2
  14. Young, D. L., and Liggett, J. A. (1977). 'Transient finite element shoallow lake circulation'. Proc. ASCE. Vol. 102(HY2), pp.1299-1313

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