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Arbitrary Lagrangian-Eulerian Approach for Finite Element Modeling of Two-dimensional Turbidity Currents
A finite element numerical model is proposed for the simulation of two-dimensional turbidity currents. Time-dependent, layer-averaged governing equations—a hyperbolic system of partial differential equations—are chosen for the numerical analysis. The Arbitrary Lagrangian-Eulerian description is introduced to provide a computational framework for the moving boundary problem. A dissipative-Galerkin formulation is used for the spatial discretization, and a second-order finite difference scheme is used for the time integration. A deforming-grid generation technique is employed to cope with the moving boundary of a propagating front. In order to estimate the bed elevation change by the turbidity current, the double-grid finite element technique is used. The developed numerical algorithm is applied to the simulation of a laboratory experiment.
Arbitrary Lagrangian-Eulerian Approach for Finite Element Modeling of Two-dimensional Turbidity Currents
A finite element numerical model is proposed for the simulation of two-dimensional turbidity currents. Time-dependent, layer-averaged governing equations—a hyperbolic system of partial differential equations—are chosen for the numerical analysis. The Arbitrary Lagrangian-Eulerian description is introduced to provide a computational framework for the moving boundary problem. A dissipative-Galerkin formulation is used for the spatial discretization, and a second-order finite difference scheme is used for the time integration. A deforming-grid generation technique is employed to cope with the moving boundary of a propagating front. In order to estimate the bed elevation change by the turbidity current, the double-grid finite element technique is used. The developed numerical algorithm is applied to the simulation of a laboratory experiment.
Arbitrary Lagrangian-Eulerian Approach for Finite Element Modeling of Two-dimensional Turbidity Currents
Choi, Sung-uk (author) / Garcia, Marcelo H. (author)
Water International ; 21 ; 175-182
1996-09-01
8 pages
Article (Journal)
Electronic Resource
Unknown
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