Journal of Environmental Impact Assessment (환경영향평가)

Korean Society of Environmental Impact Assessment (한국환경영향평가학회)
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Parameter Assessment for the Simulation of Drying/Wetting in Finite Element Analysis in River and Wetland

하천 및 습지에서 유한요소 해석시 마름/젖음 처리를 위한 매개변수 평가

  • Choi, Seung Yong (School of Architecture & Civil Engineering, Kyungpook National University) ;
  • Han, Kun Yeun (School of Architecture & Civil Engineering, Kyungpook National University) ;
  • Kim, Byung Hyun (School of Architecture & Civil Engineering, Kyungpook National University) ;
  • Kim, Sang Ho (Department of Civil Engineering, Sangji University)
  • 최승용 (경북대학교 건축.토목공학부) ;
  • 한건연 (경북대학교 건축.토목공학부) ;
  • 김병현 (경북대학교 건축.토목공학부) ;
  • 김상호 (상지대학교 토목공학과)
  • Received : 2009.09.15
  • Accepted : 2009.11.15
  • Published : 2009.12.31
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Abstract

The serious problem facing two-dimensional finite element hydraulic model is the treatment of wet and dry areas. This situation is encountered in most practical river and coastal engineering problems, such as flood propagation, dam break analysis and so on. Especially, dry areas result in mathematical complications and require special treatment. The objective of this study is to investigate the wet and dry parameters that have direct relevance to model performance in situations where inundation of initially dry areas occurs. Several numerical simulations were carried out, which examined the performance of the marsh porosity method of RMA-2 model to investigate for application of parameters. Experimental channel with partly dry side slopes, straight channel with irregular geometry and Han river were performed for tests. As a result of this study, effectively applied marsh porosity method provide a reliable results for flow distribution of wet and dry area, it could be further developed to basis for extending to water quality and sediment transport analysis.

Keywords

References

  1. 건설교통부, 2002, 한강 수계 하천정비기본계획(팔당댐-한강하구), 420-423
  2. 국토해양부, 2006, 낙동강(상류) 하천정비기본계획 (부도), 2-300
  3. Bates, P. D. and Hervouet, J. M., 1999, A new method for moving boundaryhydrodynamic problems in shallow water, Proceeding. R. Soc. London, Ser. A, 455, 3107-3128 https://doi.org/10.1098/rspa.1999.0442
  4. Balzano, A., 1998, Evaluation of methods for numerical simulation of wetting and drying in shallow water flow models, Coastal Engineering, 34, 83-107 https://doi.org/10.1016/S0378-3839(98)00015-5
  5. Donnell, B. P., et al., 2001, User's guide for RMA2 version 4.5, U.S. Army, Engineer Research and Development Center, Waterways Experiment Station, Coastal and Hydraulics Laboratory, Vicksburg, Miss, 42-86
  6. Gopalakrishnan, T., 1989, A moving boundary circulation model for regions with large tidal flats, International Journal for Numerical Method in Fluids, 28, 245-260 https://doi.org/10.1002/nme.1620280202
  7. Hervouet, J. M. and Janin, J. M., 1994, Finite element algorithms for modeling flood propagation, Modeling of Flood Propagation over Initially Dry Areas, Proc., Specialty Conf. Co-sponsored by ASCE-CNR/GNDCI-ENEL spa, Milan, Italy, ASCE, New York, 102-113
  8. King, I. P., 2000, RMA2 Version 6.6 User Manual, Publication of Resource Management Associates, Inc., Suisun, Calif., 26-56
  9. Roig, L. C., 1989, A finite element technique for simulating flow in tidal flats. Master. dissertation, University of California, Davis, 2-123
  10. 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, 522-535