Abstract
A modern multi-purpose baroclinic circulation model (SELFE) has been recently extended to include the ability to simulate tsunami propagation and inundation. The core model is based on the 3-D nonlinear shallow-water wave (NSW) equations, which are solved on unstructured grids, using the finite-element method. A semi-implicit method is used to solve all equations to enhance numerical stability, thus bypassing the most stringent CFL restriction on the time step. Further aided algorithmically by an Eulerian-Lagrangian solution of the advection terms in the momentum equation and by a simple yet effective inundation algorithm, SELFE is very efficient and robust in both quasi-2-D (with two vertical layers) and 3-D modes. A quasi-2-D version of the model is being used to update and expand the characterization of tsunami hazards along the Oregon coast. As a part of a rigorous testing procedure that includes multiple types of coastal problems, we present in this paper a quantitative assessment of performance of the quasi-2-D SELFE for two challenging open benchmark problems proposed in the 3rd International Workshop on Long-wave Runup Models. Satisfactory results are obtained for both problems.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2229-2248 |
| Number of pages | 20 |
| Journal | Pure and Applied Geophysics |
| Volume | 165 |
| Issue number | 11-12 |
| DOIs | |
| State | Published - 2008 |
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Keywords
- Cross-scale modeling
- Eulerian-Lagrangian Method
- Finite elements
- Semi-implicit model
- Tsunami inundation
ASJC Scopus subject areas
- Geochemistry and Petrology
- Geophysics
Cite this
An efficient and robust tsunami model on unstructured grids. Part I : Inundation benchmarks. / Zhang, Yinglong J.; Baptista, Antonio.
In: Pure and Applied Geophysics, Vol. 165, No. 11-12, 2008, p. 2229-2248.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - An efficient and robust tsunami model on unstructured grids. Part I
T2 - Inundation benchmarks
AU - Zhang, Yinglong J.
AU - Baptista, Antonio
PY - 2008
Y1 - 2008
N2 - A modern multi-purpose baroclinic circulation model (SELFE) has been recently extended to include the ability to simulate tsunami propagation and inundation. The core model is based on the 3-D nonlinear shallow-water wave (NSW) equations, which are solved on unstructured grids, using the finite-element method. A semi-implicit method is used to solve all equations to enhance numerical stability, thus bypassing the most stringent CFL restriction on the time step. Further aided algorithmically by an Eulerian-Lagrangian solution of the advection terms in the momentum equation and by a simple yet effective inundation algorithm, SELFE is very efficient and robust in both quasi-2-D (with two vertical layers) and 3-D modes. A quasi-2-D version of the model is being used to update and expand the characterization of tsunami hazards along the Oregon coast. As a part of a rigorous testing procedure that includes multiple types of coastal problems, we present in this paper a quantitative assessment of performance of the quasi-2-D SELFE for two challenging open benchmark problems proposed in the 3rd International Workshop on Long-wave Runup Models. Satisfactory results are obtained for both problems.
AB - A modern multi-purpose baroclinic circulation model (SELFE) has been recently extended to include the ability to simulate tsunami propagation and inundation. The core model is based on the 3-D nonlinear shallow-water wave (NSW) equations, which are solved on unstructured grids, using the finite-element method. A semi-implicit method is used to solve all equations to enhance numerical stability, thus bypassing the most stringent CFL restriction on the time step. Further aided algorithmically by an Eulerian-Lagrangian solution of the advection terms in the momentum equation and by a simple yet effective inundation algorithm, SELFE is very efficient and robust in both quasi-2-D (with two vertical layers) and 3-D modes. A quasi-2-D version of the model is being used to update and expand the characterization of tsunami hazards along the Oregon coast. As a part of a rigorous testing procedure that includes multiple types of coastal problems, we present in this paper a quantitative assessment of performance of the quasi-2-D SELFE for two challenging open benchmark problems proposed in the 3rd International Workshop on Long-wave Runup Models. Satisfactory results are obtained for both problems.
KW - Cross-scale modeling
KW - Eulerian-Lagrangian Method
KW - Finite elements
KW - Semi-implicit model
KW - Tsunami inundation
UR - http://www.scopus.com/inward/record.url?scp=59549101648&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=59549101648&partnerID=8YFLogxK
U2 - 10.1007/s00024-008-0424-7
DO - 10.1007/s00024-008-0424-7
M3 - Article
AN - SCOPUS:59549101648
VL - 165
SP - 2229
EP - 2248
JO - Pure and Applied Geophysics
JF - Pure and Applied Geophysics
SN - 0033-4553
IS - 11-12
ER -