JOURNAL OF JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES
Online ISSN : 1349-2853
Print ISSN : 0915-1389
ISSN-L : 0915-1389
Technical note
Advancement of Local Inertial Equations for Fast and Stable Flood Inundation Modelling
Tomohiro TANAKADai YAMAZAKIHidekazu YOSHIOKAMasaomi KIMURA
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JOURNAL OPEN ACCESS

2024 Volume 37 Issue 1 Pages 54-62

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Abstract

 Local inertial equations (LIEs) proposed around 2010 have been implemented in many flood simulation models. The authors have studied, using both mathematical and numerical approaches, why LIEs present higher numerical stability over earlier flood simulation models and what explains their numerical stability. This article presents reviews of several individual publications by the authors in terms of 1) comparison between LIEs with diffusive wave equations, 2) effects of the discretization of the friction term, and 3) new discretization schemes maintaining stability and accuracy. This research note documents the research narrative that research networking has led to these research outcomes.

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© 2024 Japan Society of Hydrology and Water Resources
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