Boussinesq-type modelling using an unstructured finite element technique
In: Coastal Engineering: An International Journal for Coastal, Harbour and Offshore Engineers. Elsevier: Amsterdam; Lausanne; New York; Oxford; Shannon; Tokyo. ISSN 0378-3839; e-ISSN 1872-7379, meer
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| Auteurs | | Top |
- Sørensen, O.R.
- Schäffer, H.A.
- Sørensen, L.S.
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| Abstract |
A model for solving the two-dimensional enhanced Boussinesq equations is presented. The model equations are discretisedin space using an unstructured finite element technique. The standard Galerkin method with mixed interpolation is applied. Thetime discretisation is performed using an explicit three-step Taylor-Galerkin method. The model is extended to the surf andswash zone by inclusion of wave breaking and a moving boundary at the shoreline. Breaking is treated by an existing surfaceroller model, but a new procedure for the detection of the roller thickness is devised. The model is verified using four test casesand the results are compared with experimental data and results from an existing finite difference Boussinesq model. |
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