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Open AccessArticle

Numerical Simulation of Flood Inundation in a Small-Scale Coastal Urban Area Due to Intense Rainfall and Poor Inner Drainage

1
Department of Civil Engineering, Yeungnam University, 280, Daehak-ro, Gyeongsan, Gyeongbuk 38541, Korea
2
Department of Civil Engineering, Kyungnam University, 7, Kyungnamdaehak-ro, Masanhappo-gu, Changwon, Kyungnam 51767, Korea
*
Author to whom correspondence should be addressed.
Water 2019, 11(11), 2269; https://doi.org/10.3390/w11112269
Received: 20 August 2019 / Revised: 18 October 2019 / Accepted: 25 October 2019 / Published: 29 October 2019
(This article belongs to the Special Issue Management of Hydrological Extremes: Floods and Droughts)
This study presents the numerical simulation and analysis of the characteristics of the flood inundation in a small-scale coastal urban area due to the intense rainfall and poor inner drainage from the tidal level rise occurring during a typhoon. The employed numerical model is a two-dimensional finite volume model with a well-balanced HLLC (Harten–Lax–Van Leer contact) scheme. The target area is a coastal urban area downstream of the Gohyun river; which is located in Geoje City of Kyungsangnam Province, Korea. This area was significantly damaged by flood inundation due to the heavy rainfall and significant increase in the tidal level during Typhoon “Maemi”, which occurred in September 2003. The numerical model used in this study is verified using the flood inundation traces observed in the selected urban area. Moreover; the characteristics of the flood inundation based on the change in the river inflow due to the increase or decrease in the intensity of the possible heavy rainfall that may occur in the future are simulated and analyzed. View Full-Text
Keywords: coastal urban area; finite volume model; flood inundation; poor inner drainage; well-balanced HLLC scheme coastal urban area; finite volume model; flood inundation; poor inner drainage; well-balanced HLLC scheme
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MDPI and ACS Style

Son, K.-I.; Jeong, W. Numerical Simulation of Flood Inundation in a Small-Scale Coastal Urban Area Due to Intense Rainfall and Poor Inner Drainage. Water 2019, 11, 2269.

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