TWO DIMENSIONAL MODELLING OF DAM-BREAK FLOW OVER MOVABLE BED USING TAYLOR GALERKIN FINITE ELEMENT METHOD
Dam failure can cause economic loss, besides this event can also endanger the lives of people living in the downstream area of the dam. Flood flow modeling due to dam failure is important in reducing the high risk of dam failure. Numerical modeling is an effective way to study the dam-break flow...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/50691 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Dam failure can cause economic loss, besides this event can also endanger the lives
of people living in the downstream area of the dam. Flood flow modeling due to
dam failure is important in reducing the high risk of dam failure. Numerical
modeling is an effective way to study the dam-break flow phenomenon. In this study,
a numerical model based on the Taylor Galerkin finite element method was
developed to simulate the phenomena of flooding, erosion and sediment transport
due to dam failure. The finite element method has the advantage of flexibility for
some complex geometries. In this numerical model, time discretization is solved by
using the Taylor series approach and space discretization using the Galerkin
method. The numerical model developed will be applied to several test cases of dam
break flow, both in fixed and movable bed. To increase numerical stability, Hansen
numerical filter is used. Taylor Galerkin's model provides a good agreement after
being verified with the analytical, experimental, and numerical results from
previous studies. The simulation results show that the Taylor Galerkin model is able
to simulate the phenomena of flooding, erosion and sediment transport due to dambreak.
Modeling like this is needed as a mitigation tool in reducing the impact
caused by dam failure.
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