Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
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Development of Grid Reconstruction Method to Simulate Drying/Wetting in Natural Rivers (II): Model Application and Comparison

자연하천에서 마름/젖음 처리를 위한 격자재구성 기법의 개발 (II): 모형의 적용 및 비교.검토

  • Choi, Seung-Yong (School of Archi. & Civil Engineering, Kyungpook National Univ.) ;
  • Kim, Sang-Ho (Department of Civil Engineering, Sangji Univ.) ;
  • Hwang, Jae-Hong (School of Archi. & Civil Engineering, Kyungpook National Univ.) ;
  • Han, Kun-Yeun (School of Archi. & Civil Engineering, Kyungpook National Univ.)
  • 최승용 (경북대학교 공과대학 건축.토목공학부) ;
  • 김상호 (상지대학교 건설시스템공학과) ;
  • 황재홍 (경북대학교 공과대학 건축.토목공학부) ;
  • 한건연 (경북대학교 공과대학 건축.토목공학부)
  • Published : 2009.11.30
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Abstract

The objective of this study is to examine validation of Grid Reconstruction Method, which is developed to simulate drying/wetting in complex natural rivers with wetting and drying domain areas. To verify application of the developed model, the model was applied to natural rivers with wetting and drying domain areas such as Han river and Nakdong river. The simulation results have shown good agreements with observed data and the results for the developed model were more accurate and improved stability of numerical computation than those of RMA-2 model. If the analysis of contaminant advection-diffusion and sediment transport are performed with the study results, the results can be effectively applied to river flow analysis and ecological hydraulics.

본 연구의 목적은 마름/젖음 영역을 가지는 복잡한 자연하천에 대해 마름/젖음 처리를 위해 개발된 격자재구성 기법의 적용성을 검토하는 것이다. 자연하천에 대한 모형의 적용성과 검증을 위해 개발된 모형을 마름/젖음 영역을 갖는 한강 구간과 낙동강 구간에 적용하였다. 모의 결과를 실측치와 비교한 결과 실측치와 비교적 잘 일치함을 확인할 수 있었고 상용 모형인 RMA-2 모형의 모의결과와 비교해서도 안정되고 정확한 해를 주는 것을 확인할 수 있었다. 본 연구결과를 오염물질의 이송-확산해석, 토사이송해석 등과 연계되어 해석된다면 하천에서의 흐름 해석 및 생태 수리 분야에 효과적으로 응용될 수 있을 것으로 판단된다.

Keywords

References

  1. 건설교통부 (2002). 한강 수계 하천정비기본계획(팔당댐-한강하구), pp. 420-423
  2. 국토해양부 (2006). 낙동강(상류) 하천정비기본계획(부도), pp. 2-300
  3. Alam, M.M. and Bhuiyan, M.A. (1995). 'Collocation finite element simulation of dam-break flows.' Journal of Hydraulics Engineering, ASCE, Vol. 121, No. 2, pp. 118-128 https://doi.org/10.1061/(ASCE)0733-9429(1995)121:2(118)
  4. Balzano, A. (1998). 'Evaluation of methods for numerical simulation of wetting and drying in shallow water flow models.' Coastal Engineering, 34, pp. 83-107 https://doi.org/10.1016/S0378-3839(98)00015-5
  5. Benque, J.P., Cunge, J.A., Feuillet, J., Hauguel, A. and Holly, F.M. (1982). 'New method for tidal current computation.' Journal of the Waterway, ASCE, Vol. 108, No. WW3, pp. 170-185
  6. Froehlich, D.C. (1990). 'Hermite-Galerkin model for dam-break floods.' Proceeding of 1990 National Conference on Hydraulics Engineering, ASCE, pp. 557-562
  7. Ghanem, H.M. (1995). Two-dimensional finite element modeling of flow in aquatic habitats. Ph.D. dissertation, University of Alberta Edmonton, Alberta, Canada, pp. 1-38
  8. Gopalakrishnan, T. (1989). 'A moving boundary circulation model for regions with large tidal flats.' International Journal for Numerical Method in Fluids, Vol. 28, pp. 245-260 https://doi.org/10.1002/nme.1620280202
  9. Jenkins, G.A. and Keller, R.J. (1990). 'Numerical Modelling of Flows in Natural Rivers.' Proceeding of Conference on Hydraulics in Civil Engineering, Sydney, 35-43
  10. Katopodes, N.D. (1987). 'Analysis of transient flow through broken levees.' Turbulence Measurenents and Flow Modeling, Hemisphere Publishing Corp., Washington, D. C., pp. 301-310
  11. Kawahara, M. and Umetsu, T. (1986). 'Finite element method for moving boundary problems in river flow.' International Journal for Numerical Methods in Fluids, Vol. 6, pp. 365-386 https://doi.org/10.1002/fld.1650060605
  12. Lynch D.R. and Gray, W.G. (1978). 'Finite element simulation of shallow water problems with moving boundaries.' Proceedings of the 2nd International Conference on Finite Elements in Water Resources. Pentech: London, pp. 223-243
  13. Molls, T., Zhao, G. and Molls, F. (1988). 'Friction Slope in Depth-Averaged Flow.' Journal of Hydraulics Engineering, ASCE, Vol. 124, No. 1, pp. 81-85 https://doi.org/10.1061/(ASCE)0733-9429(1998)124:1(81)
  14. Roig, L.C. (1989). A finite element technique for simulating flow in tidal flats. Master. dissertation, University of California, Davis, pp. 2-123
  15. Roig, L.C. and Evans, R.A. (1993). 'Environmental modeling of coastal wetlands.' Proc., 3rd Int. Conf. on Estuarine and Coastal Modeling III, ASCE, New York, 0-87262-975-9, pp. 522-535
  16. Samuels, P.G. (1985). 'Modeling of river and floodplain flow using the finite element method.' Research Report, No. SR 61 , pp. 1-198

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