NDLI: 2D–3D hybrid stabilized finite element method for tsunami runup simulations

Content Provider	Springer Nature Link
Author	Takase, S. Moriguchi, S. Terada, K. Kato, J. Kyoya, T. Kashiyama, K. Kotani, T.
Copyright Year	2016
Abstract	This paper presents a two-dimensional (2D)–three-dimensional (3D) hybrid stabilized finite element method that enables us to predict a propagation process of tsunami generated in a hypocentral region, which ranges from offshore propagation to runup to urban areas, with high accuracy and relatively low computational costs. To be more specific, the 2D shallow water equation is employed to simulate the propagation of offshore waves, while the 3D Navier–Stokes equation is employed for the runup in urban areas. The stabilized finite element method is utilized for numerical simulations for both of the 2D and 3D domains that are independently discretized with unstructured meshes. The multi-point constraint and transmission methods are applied to satisfy the continuity of flow velocities and pressures at the interface between the resulting 2D and 3D meshes, since neither their spatial dimensions nor node arrangements are consistent. Numerical examples are presented to demonstrate the performance of the proposed hybrid method to simulate tsunami behavior, including offshore propagation and runup to urban areas, with substantially lower computation costs in comparison with full 3D computations.
Starting Page	411
Ending Page	422
Page Count	12
File Format	PDF
ISSN	01787675
Journal	Computational Mechanics
Volume Number	58
Issue Number	3
e-ISSN	14320924
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-05-21
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Stabilized finite element method 2D–3D hybrid method MPC Tsunami Theoretical and Applied Mechanics Computational Science and Engineering Classical Continuum Physics
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Ocean Engineering Computational Theory and Mathematics Mechanical Engineering Computational Mechanics Computational Mathematics

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