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KMID : 1024520120210040471
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Journal of the Environmental Sciences
2012 Volume.21 No. 4 p.471 ~ p.478
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Study on the Flow Characteristics at Natural Curved Channel by 2D and 3D Models
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Ahn Seung-Seop
Jung Do-Joon
Lee Sang-Il
Kim Wi-Seok
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Abstract
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In this study, the flow characteristic analysis at the curved-channel of the actual channel section is compared and reviewed using the 2D RMA-2 model and the 3D FLOW-3D model. the curve section with curve rate 1.044 in the research section is analyzed applying the frequency of he project flood of 100 years. According to the result, the issue for the application of the FLOW-3D Model’s three-dimensional numeric analysis result to the actual river is found to be reviewed with caution. Also, application of the 3D model to the wide basin’s flood characteristic is determined to be somewhat risky. But, the applicability to the hydraulic property analysis of a partial channel section and the impact analysis and forecast of hydraulic structure is presumed to be high. In addition, if the parameters to reflect the vegetation of basin and the actual channel, more accurate topological measurement data and the topological data with high closeness to the current status are provided, the result with higher reliability is considered to be drawn.
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KEYWORD
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RMA-2, FLOW-3D, Curved channel, Hydraulic property, Super elevation
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