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Water 2018, 10(1), 85; doi:10.3390/w10010085

Numerical Computation of Underground Inundation in Multiple Layers Using the Adaptive Transfer Method

Multi Disaster Countermeasure Organization, Korea Institute of Civil Engineering and Building Technology, Gyeonggi-do 10223, Korea
Department of Safety Engineering, Incheon National University, Incheon 22012, Korea
Author to whom correspondence should be addressed.
Received: 15 November 2017 / Revised: 15 January 2018 / Accepted: 16 January 2018 / Published: 19 January 2018
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Extreme rainfall causes surface runoff to flow towards lowlands and subterranean facilities, such as subway stations and buildings with underground spaces in densely packed urban areas. These facilities and areas are therefore vulnerable to catastrophic submergence. However, flood modeling of underground space has not yet been adequately studied because there are difficulties in reproducing the associated multiple horizontal layers connected with staircases or elevators. This study proposes a convenient approach to simulate underground inundation when two layers are connected. The main facet of this approach is to compute the flow flux passing through staircases in an upper layer and to transfer the equivalent quantity to a lower layer. This is defined as the ‘adaptive transfer method’. This method overcomes the limitations of 2D modeling by introducing layers connecting concepts to prevent large variations in mesh sizes caused by complicated underlying obstacles or local details. Consequently, this study aims to contribute to the numerical analysis of flow in inundated underground spaces with multiple floors. View Full-Text
Keywords: underground inundation; flood modeling; adaptive transfer method; layer connection underground inundation; flood modeling; adaptive transfer method; layer connection

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Kim, H.-J.; Rhee, D.S.; Song, C.G. Numerical Computation of Underground Inundation in Multiple Layers Using the Adaptive Transfer Method. Water 2018, 10, 85.

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