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Çѱ¹¼öÀÚ¿øÇÐȸ / v.45, no.1, 2012³â, pp.39-52
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´ëµµ½Ã º¹ÇÕÀ¯¿ªÀÇ ÁöÇ¥ ¹× ÁöÇ¥ÇÏ À¯ÃâÇØ¼®±â¹ý °³¹ß (I)- ÀÌ·Ð ¹× ¸ðµâÀÇ °³¹ß -
( A Development of Method for Surface and Subsurface Runoff Analysis in Urban Composite Watershed (I) - Theory and Development of Module - ) |
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Surface-subsurface interactions are an intrinsic component of the hydrologic response within a watershed. In general, these interactions are considered to be one of the most difficult areas of the discipline, particularly for the modeler who intends simulate the dynamic relations between these two major domains of the hydrological cycle. In essence, one major complexity is the spatial and temporal variations in the dynamically interacting system behavior. The proper simulation of these variations requires the need for providing an appropriate coupling mechanism between the surface and subsurface components of the system. In this study, an approach for modelling surface-subsurface flow and transport in a fully intergrated way is presented. The model uses the 2-dimensional diffusion wave equation for sheet surface water flow, and the Boussinesq equation with the Darcy's law and Dupuit-Forchheimer's assumption for variably saturated subsurface water flow. The coupled system of equations governing surface and subsurface flows is discretized using the finite volume method with central differencing in space and the Crank-Nicolson method in time. The interactions between surface and subsurface flows are considered mass balance based on the continuity conditions of pressure head and exchange flux. The major module consists of four sub-module (SUBFA, SFA, IA and NS module) is developed. |
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ÁöÇ¥ À¯Ãâ;ÁöÇ¥ÇÏ À¯Ãâ;»óÈ£ÀÛ¿ë;Ä¿Çøµ;°¿ì-À¯ÃâÇØ¼® ¸ðµâ;surface flow;subsurface flow;interaction;coupling;rainfall-runoff analysis module; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.45, no.1, 2012³â, pp.39-52
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201208040010024)
¾ð¾î : Çѱ¹¾î |
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³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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