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Modeling of Hurricane Impacts, Interim Report 2
Interim rept. no. 2
UNESCO-THE INST FOR WATER EDUCATION DELFT (NETHERLANDS)
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This report is the second progress report of the project Modeling of Hurricane Impacts. The main objective of the XBeach model is to provide a robust and flexible environment in which to test morphological modelling concepts for the case of dune erosion, overwashing and breaching. The top priority is to provide numerical stability first order accuracy is accepted since there is a need for small space steps and time steps anyway, to represent the strong gradients in space and time in the nearshore and swash zone. Because of the many shock-like features in both hydrodynamics and morphodynamics we choose upwind schematizations as a means to avoid numerical oscillations which can be deadly in shallow areas. Over the last months, much effort has been put into further development of the XBeach model. A first series of mainly 1D validation tests have been carried out, culminating in the successful simulation of a dune erosion test carried out in a large-scale wave flume LIP11D test 2E, Arcilla et al., 1993. The results are briefly shown in this report.
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