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http://dx.doi.org/10.3741/JKWRA.2013.46.6.655

Applicability Evaluation of Flood Inundation Analysis using Quadtree Grid-based Model  

Lee, Dae Eop (IWRRI., Chungnam National Univ.)
An, Hyun Uk (Numerical Program Team, Division of Computational Sciences in Mathematics, National Institute for Mathematical Sciences)
Lee, Gi Ha (Dept. of Constructional Disaster Prevention Eng., Kyungpook National Univ.)
Jung, Kwan Sue (Dept. of Civil Engrg., Chungnam National Univ.)
Publication Information
Journal of Korea Water Resources Association / v.46, no.6, 2013 , pp. 655-666 More about this Journal
Abstract
Lately, intensity and frequency of natural disasters such as flood are increasing because of abnormal climate. Casualties and property damages due to large-scale floods such as Typhoon Rusa in 2002 and Typhoon Maemi in 2003 rapidly increased, and these show the limits of the existing disaster prevention measures and flood forecasting systems regarding irregular climate changes. In order to efficiently respond to extraordinary flood, it is important to provide effective countermeasures through an inundation model that can accurately simulate flood inundation patterns. However, the existing flood inundation analysis model has problems such as excessive take of analysis time and accuracy of the analyzed results. Therefore, this study conducted a flood inundation analysis by using the Gerris flow solver that uses quadtree grid, targeting the Baeksan Levee in the Nakdong River Basin that collapsed because of a concentrated torrential rainfall in August, 2002. Through comparisons with the FLUMEN model that uses unstructured grid among the existing flood inundation models and the actual flooded areas, it determined the applicability and efficiency of the quadtree grid-based flood inundation model of the Gerris flow solver.
Keywords
quadtree grid; adaptive mesh refinement method; Beaksan Levee; flood inundation model; gerris; FLUMEN;
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Times Cited By KSCI : 4  (Citation Analysis)
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