Tsunami Simulation by 3D Model Around a Power Station Due to the 2011 Tohoku Earthquake

In the 2011 Tohoku Earthquake, many structures were destroyed by the tsunami whose magnitudes were much larger than the design level. Tsunami defense structures in coastal areas will need reinforcement in the future, and for that reason it is important to evaluate tsunami behavior and resulting tsun...

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Bibliographic Details
Published in:Coastal Engineering Journal 2016-12, Vol.58 (4), p.1640014-1-1640014-18
Main Authors: Shijo, Rikuma, Tsukuda, Yoshiaki, Sato, Toshihiro, Higuchi, Kojiro, Kudo, Satoshi, Ishizaki, Junichi, Shimizu, Shinichi, Mase, Hajime
Format: Article
Language:English
Subjects:
Boundary conditions
Coastal structures
Coastal zone
Computer simulation
Dynamic models
Earthquake damage
Earthquake design
Earthquakes
Flooding
Flow velocity
Fluid dynamics
Mathematical models
Physical simulation
Power plants
Seismic activity
Shallow water
Simulation
Thermal energy
Thermal power
Thermal power plants
Thermal powerplants
Thermal transformations
Thermoelectricity
Three dimensional models
Three-dimensional tsunami simulation
Topography (geology)
tsunami behavior
tsunami inundation
Tsunamis
Two dimensional models
VOF model
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Summary:In the 2011 Tohoku Earthquake, many structures were destroyed by the tsunami whose magnitudes were much larger than the design level. Tsunami defense structures in coastal areas will need reinforcement in the future, and for that reason it is important to evaluate tsunami behavior and resulting tsunami force. This study analyzes tsunami transformation around a Haramachi thermal power station which suffered serious damage by the tsunami due to the 2011 Tohoku Earthquake and which has complex topography and building layout. A three-dimensional (3D) tsunami simulation is carried out for a surrounding region of the Haramachi thermal power station using boundary conditions of the water surface elevation and flow velocity obtained from a two-dimensional (2D) tsunami simulation by a nonlinear shallow water model. Using these boundary conditions, the computer fluid dynamic model FLUENT is employed to simulate the tsunami behavior around the Haramachi thermal power station. The validity of the predictions is examined by comparison with actual traces of tsunami inundation depths (I.D.).
ISSN:2166-4250
0578-5634
1793-6292
1793-6292
DOI:10.1142/S0578563416400143