Journal of the Korean Society of Marine Environment & Safety (해양환경안전학회지)

The Korean Society of Marine Environment and safety (해양환경안전학회)
권호 표지
DOI QR코드

DOI QR Code

Numerical Experiments Using Modified POM WAD with Computing Time Saving Technique

계산시간절약기법이 적용된 수정 POM WAD의 수치실험

  • Received : 2014.12.18
  • Accepted : 2015.02.25
  • Published : 2015.02.28
Download PDF
⟨ Previous Next ⟩

Abstract

In order to effectively and economically apply the previous POM(Princeton Ocean Model) WAD(Wetting And Drying) to the coastal area, the POM WAD was modified such as the water elevation input of tidal harmonics in the open boundaries was included and a CTS(Computing Time Saving) technique was introduced to the model. The modified model was tested to the standing waves in the rectangular bay and the hydraulic experiments for the flow and heat diffusion in the 3D basin. The numerical results showed a good agreement with the analytical solutions of the standing waves and the observed values by the hydraulic experiments, respectively. And also when the modified model with the CTS technique was applied to Gwangyang Bay of Korea, the computing time was decreased by as much as 39.4%.

본 논문에서는 기존의 POM(Princeton Ocean Model) WAD(Wetting and Drying) 모형을 연안역에서 조석조류의 계산에 적합하도록 개경계에서 조석조화상수를 입력하여 사용할 수 있도록 하였고, CTS(Computing Time Saving) 기법을 도입하여 계산시간을 단축할 수 있도록 개선하였다. 이와 같이 수정된 모형은 장방형 내만에 하나의 절점을 갖는 정상파에 대한 해석해 실험과 유속 및 열확산에 대한 수리모형 실험결과와 비교하여 좋은 결과를 얻었다. 그리고 간석지가 발달한 광양만의 현지해역에 이 CTS 기법을 적용하여 계산시간이 39.4% 단축되는 결과를 얻었다.

Keywords

References

  1. Blumberg, A. F. and G. L. Mellor(1987), A description of a three-dimensional coastal ocean circulation model, In: Threedimensional Coastal Models, edited by N. S. Heaps, American Geophysical Union, Washington, D.C., pp. 1-16.
  2. Byun, D. S.(2007), Overview of tidal phase-lag references used in Korea, The Sea J. Korean Soc. of Oceanography, Vol. 12, No. 3, pp. 234-238.
  3. Flow Science(1999), FLOW-3D User's Manual, Chapter 3 Theory, Los Alamos, NM, USA, pp. 1-164.
  4. Fofonoff, N. P.(1962), Physical properties of sea-water, In: The Sea, Vol. 1, edited by N. M. Hill Interscience, New York, pp. 3-30.
  5. Hong, C. H. and Y. K. Choi(1997), The response of temperature and velocity fields to $M_2$ tide in Deukryang bay in the southern sea of Korea, J. Korean Fish. Soc., Vol. 30, No. 4, pp. 667-678.
  6. Joo, K. H.(2002), Analysis of three-dimensional behavior of Nakdong river discharge flow, Ph.D. Dissertation, Pukong National University, p. 115.
  7. Jung, T. S.(1994), A three dimensional numerical model of circulation and heat transport in coastal region, Ph.D. Dissertation, Seoul National University, p. 205.
  8. Kang, T. S.(1999), A study on the circulation characteristics of south-eastern sea in Korea using the three dimensional ocean circulation model, Master's Thesis, Interdisciplinary Program of Ocean Industrial Engineering, Pukyong National University, p. 116.
  9. Kim, C. K.(1992), Transport mechanism and three-dimensional transport model of cohesive sediment, Ph.D. Dissertation, National Fisheries University of Pusan, p. 184.
  10. Kim, M. W.(2006), Tidal current characteristics of Seomjin river estuary using the POM, Master's Thesis, Yosu National University, p. 67.
  11. KORDI(1996), Development of prediction techniques for waste dispersion in the seas, Report on Management Technique for Marine Environment Protection, p. 220.
  12. Lee, K. S.(2000), Development of a three-dimensional semiimplicit hydrodynamic model, Master's Thesis, Inha University, p. 52.
  13. Mellor, G. L. and T. Yamada(1982), Development of a turbulence closure model for geophysical fluid problems, Reviews of Geophysics and Space Physics, Vol. 20, No. 4, pp. 851-875. https://doi.org/10.1029/RG020i004p00851
  14. Neumann, G. and W. J. Pierson(1966), Principles of physical oceanography, Prentice-Hall Inc., Englewood Cliffs, N. J., p. 545.
  15. Oey, L. Y.(2005), A wetting and drying scheme for POM, Ocean Modelling, Vol. 9, pp. 133-150. https://doi.org/10.1016/j.ocemod.2004.06.002
  16. Oey, L. Y.(2006), An OGCM with movable land-sea boundaries, Ocean Modelling, Vol. 13, pp. 176-195. https://doi.org/10.1016/j.ocemod.2006.01.001
  17. Pande, B. B. L. and N. Rajaratnam(1977), An experimental study of bluff buoyant turbulent surface jets, J. Hyd. Res., Vol. 15, pp. 261-275. https://doi.org/10.1080/00221687709499647
  18. Rodi, W.(1972), The prediction of free turbulent boundary layers by use of a two-equation model of turbulence, Thesis submitted for the degree of Doctor of Philosophy in the Faculty of Engineering, University of London and for the Diploma of Membership of Imperial College, pp. 1-310.
  19. Smagorinsky, J.(1963), General circulation experiments with the primitive equations, I. the basic experiment, Monthly Weather Review, Vol. 91, pp. 99-164. https://doi.org/10.1175/1520-0493(1963)091<0099:GCEWTP>2.3.CO;2