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- Title
A two‐way coupling 2D‐3D hybrid finite element numerical model using overlapping method for tsunami simulation.
- Authors
Ling, Guoming; Matsumoto, Junichi; Kashiyama, Kazuo
- Abstract
This paper describes a 2D‐3D hybrid model for tsunami simulations that uses an overlapping method based on an arbitrary grid. A 2D model is used to simulate wave propagation from the source area to the offshore area, and a 3D model is then used to simulate the free surface flow around structures in coastal areas. An overlapping method that satisfies the conservation and compatibility conditions is developed to couple the two models. The shallow water equations are applied for the 2D model, and the Navier‐Stokes equations and continuity equations are applied for the flow field of the 3D model. The Allen‐Cahn equation is applied for the interface‐capturing method of the 3D model. The stabilized finite element method is applied for the spatial discretization and the Crank‐Nicolson method is used for the temporal discretization of the governing equations. The model is verified and validated through several numerical analysis examples.
- Subjects
FINITE element method; SHALLOW-water equations; OFFSHORE structures; NUMERICAL analysis; CRANK-nicolson method; FREE surfaces; TSUNAMIS
- Publication
International Journal for Numerical Methods in Fluids, 2023, Vol 95, Issue 11, p1732
- ISSN
0271-2091
- Publication type
Article
- DOI
10.1002/fld.5220