하천 및 습지에서 유한요소 해석시 마름/젖음 처리를 위한 매개변수 평가
Parameter Assessment for the Simulation of Drying/Wetting in Finite Element Analysis in River and Wetland
1
조회
0
다운로드
3
인용
0
참고문헌
초록
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.
참고문헌 (10)
- 건설교통부, "한강 수계 하천정비기본계획(팔당댐-한강하구)", 420~423 (2002)
- 국토해양부, "낙동강(상류) 하천정비기본계획(부도)", 2~300 (2006)
- Bates, P. D, "A new method for moving boundary hydrodynamic problems in shallow water", Proceeding. R. Soc. London, Ser. A, 455, pp.3107~3128 (1999)
- Balzano, A, "Evaluation of methods for numerical simulation of wetting and drying in shallow water flow models", Coastal Engineering, 34, pp.83~107 (1998)
- Donnell, B. P., "User’s guide for RMA2 version 4.5, U.S. Army, Engineer Research and Development Center, Waterways Experiment Station, Coastal and Hydraulics Laboratory", pp.42~86 (2001), Vicksburg, Miss
- Gopalakrishnan, T., "A moving boundary circulation model for regions with large tidal flats", International Journal for Numerical Method in Fluids, 28, pp.245~260 (1989)
- Hervouet, J. M, "Finite element algorithms for modeling flood propagation, Modeling of Flood Propagation over Initially Dry Areas", Proc., Specialty Conf. Co-sponsored by ASCE-CNR, 1994, 102~113
- King, I. P, "RMA2 Version 6.6 User Manual, Publication of Resource Management Associates", pp.26~56 (2000), Inc., Suisun, Calif
- Roig, L. C, "A finite element technique for simulating flow in tidal flats", 석사, pp.1989
- Roig, L. C, "Environmental modeling of coastal wetlands", Proc., 3rd Int. Conf. on Estuarine and Coastal Modeling III, ASCE, New York, pp.522~535 (1993)