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http://dx.doi.org/10.3741/JKWRA.2013.46.7.707

Analysis of Flow and Bed Change on Hydraulic Structure using CCHE2D : Focusing on Changnyong-Haman  

Ahn, Jung Min (Dept. of Civil Engrg., Changwon National Univ.)
Lyu, Siwan (Dept. of Civil Engrg., Changwon National Univ.)
Publication Information
Journal of Korea Water Resources Association / v.46, no.7, 2013 , pp. 707-717 More about this Journal
Abstract
Channel-bed of erosion and sedimentation, where eroded bed and bank materials re-deposit through the action of flow, is a natural phenomenon in alluvial systems. Analysis using a numerical model is important to understand the sediment transport mechanism associated with erosion and sedimentation near weirs and other hydraulic structures within riverine systems. The local riverbed change near a hydraulic structure (Changnyong-Haman multi-function weir in Nakdong river) has been analyzed in order to examine the effect of hydraulic structure on local bed change. A 2D numerical model (CCHE-2D) has been implemented to simulate the sedimentation and erosion over a reach (10 km) including the weir. For the calibration and verification of the model, the rainfall data from a real event (Typoon 'Maemi' in 2003) has been used for flow and stage simulation. And the simulated results show a good agreement with the observed data for whole domain. From the result, it was found that the installation and operation of weir can aggravate the local bed change caused from the flow field change and resulting redistribution of sediment.
Keywords
CCHE2D; local bed change; hydraulic structure; flow filed;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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1 Smagorinsky, J. (1963). General circulation experiments with the primitive equation, I. The basic experiment. Monthly Weather Review, Vol. 91, pp. 99-164.   DOI
2 Yang, C.T. (2003). Sediment transport, Cheong Moon Gak.
3 Ji, U., Yeo, W.K., and Han, S.W. (2010). "Numerical analysis for bed changes dut to sediment transport capacity formulas and sediment transport modes at the upstream approached channel of th Nakdong river estuary barrage." Journal of Korea Water Resources Association, Vol. 43 No. 6, pp. 543-557.   DOI   ScienceOn
4 Khosronejad A., Kang, S., and Sotiropoulos, F. (2012). "Experimental and computational investigation of local scour around bridge piers." Advances in Water Resources, Vol. 37, pp. 73-85.   DOI   ScienceOn
5 Korea Water Resources Association (2005). River Design Criteria.
6 Ministry of Land, Transport and Maritime Affairs (2004). Nakdong river watershed survey.
7 Korea Water Resources Corporation (2008). Development of coupling operation system and decision support for flood control in the Nakdong river basin.
8 Korea Water Resources Corporation (2010). Input data analysis of numerical model for river bed change investigation.
9 Lee, J.W., Lee, M.S., Jung, I.K., Park, G.A., and Kim, S.J. (2011). "Stream type classification and 2- dimensional hydraulic characteristics and bed change in Anseongcheon streams and tributaries." Journal of The Korean Association of Geographic Information Studies, Vol. 14, No. 4, pp. 77-91.   과학기술학회마을   DOI   ScienceOn
10 Ministry of Land, Transport and Maritime Affairs (2009a). The basic plan of stream-improvement for Nakdong river-Geumho river-Estuary.
11 Ministry of Land, Transport and Maritime Affairs (2009b) The detail design of development of residential sites for Nak river 23 district.
12 Ministry of Land, Transport and Maritime Affairs (2010). The detail design of development of residential sites for Nak river 23 district-Hydraulic model experiment.
13 Nassar, M.A. (2011). "Multi-parametric sensitivity analysis of CCHE2D for channel flow simulations in Nile river." Journal of Hydro-environment Research, Vol. 5, pp. 187-195.   DOI   ScienceOn
14 Ackers, P., and White, W.R. (1973). "Sediment transport New approach and analysis." Journal of Hydraulic Div., ASCE, Vol. 99, No. HY11, pp. 2041-2060.
15 Ahn, J.M., and Park, I.H. (2012). "An assessment on the hydraulic characteristics of a multi-dimensional model in response to measurement resolution and spatial interpolation methods." Journal of The Korean Society for GeoSpatial Information System, Vol. 20, No. 1, pp. 43-51.   과학기술학회마을   DOI   ScienceOn
16 Briaud, J.L., Ting, F., Chen, H., Cao, Y., Gudavalli, R., and Perugu, S. (1999). "Sricos: prediction of scour rate in cohesive soils at bridge piers." J Geo Geoenv Soc Am, ASCE, Vol. 125, No. 4, pp. 237-246.   DOI   ScienceOn
17 Richardson, E.V., and Davis, S.R. (2001). Evaluating scour at bridges (4th ed.). U.S. Federal Highway Administration Publication FHWA NHI 01-001 Hydraulic Engineering Circular, No. 18, pp. 378.
18 Ahn, J.M., Hur, Y.T., and Lyu, S. (2013). "Coupling simulation with multi-dimensional models for river flow." Journal of Korean Society of Civil Engineers, Vol. 33 No. 1, pp. 137-147.   과학기술학회마을   DOI   ScienceOn
19 Ahn, J.M., Hur, Y.T., Kwak, S., Lee, K., and Lyu, S. (2012). "Application of flood analysis system around weir." Proceedings of 2012 Korean Society of Civil Engineers, Korean Society of Civil Engineers, pp. 1691-1694.
20 Ahn, J.M., Park, I.H., Lyu, S., and Hur, Y.T. (2012). "Evaluation of optimal grid resolution for hydrody namic proper simulation." Journal of The Korean Society for GeoSpatial Information System, Vol. 20, No. 1, pp. 109-116.
21 Formann, E., Habersack, H.M., and Schober, St. (2007). "Morphodynamic river processes and techniques for assessment of channel evolution in Alpine gravel bed rivers." Geomorphology, Vol. 90, pp. 340-355.   DOI   ScienceOn
22 Huang, S.L., Jia, Y.F., andWang, S.S.Y. (2006). "Numerical modeling of suspended sediment transport in channel bends." Journal of Hydrodynamics, Vol. 18 No. 4, pp. 411-417.   DOI   ScienceOn
23 Hur, Y.T., and Park, J.H. (2009). "Assessment of EFDC model for hydrodynamic analysis in the Nakdong river." Journal of Korea Water Resources Association, Vol. 42, No. 4, pp. 309-317.   과학기술학회마을   DOI   ScienceOn
24 Ministry of Land, Transport and Maritime Affairs (2009c). The basic plan of stream-improvement for Nam river.
25 Ahn, J.M., Hur, Y.T., Kang, S.U., and Kim, H.S. (2011). "Multi-dimensional hydrodynamics analysis system around weir." Proceedings of 2011 Korean Society of Civil Engineers, Korean Society of Civil Engineers, pp. 1920-1923.
26 Froehlich, W. (2003). Erosion and sediment transport measurement in rivers: technological and methodological advances. International Association of Hydrological Sciences 2003, IAHS, No. 283, pp. 202.
27 Jia, Y., and Wang, S.S.Y. (2001). CCHE2D: two-dimensional hydrodynamic and sediment transport model for unsteady open channel flows over loose bed. Technical Report, NCCHE-TR-2001-1, National Center for Computational Hydroscience and Engineering, University of Mississippi, University, Mississippi.