Two-Dimensional Flood Simulation on Unstructured Grids
Publication: World Environmental and Water Resource Congress 2006: Examining the Confluence of Environmental and Water Concerns
Abstract
A two-dimensional flood simulation model using unstructured grids has been developed to study the hydrodynamics of flooding processes. The model employs the finite volume method to solve the conservative form of the shallow water equations. The HLL approximate Riemann solver is used for computing the intercell fluxes because of its robustness and easiness to implement. The momentum equation used in the model has only one source term representing the driving forces, so that numerical imbalance between source and flux terms can be easily eliminated. In addition to the model formulation, this paper presents the model verifications and validations against analytical solutions and experimental data for a partial dam-break problem and an oblique hydraulic jump test case, respectively. The results show that the model can correctly account for the two-dimensional shallow water flows which may have mixed flow regimes and dry bed problems. These features can allow the model to simulate complicated real-life flooding problems.
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Copyright
© 2006 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
ASCE Technical Topics:
- Engineering fundamentals
- Finite volume method
- Floods
- Flow (fluid dynamics)
- Flow duration
- Fluid dynamics
- Fluid mechanics
- Grid systems
- Hydraulic models
- Hydrologic engineering
- Models (by type)
- Shallow water
- Simulation models
- Systems engineering
- Systems management
- Two-dimensional models
- Water (by type)
- Water and water resources
- Water conservation
- Water management
- Water policy
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