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Creating a model for XBeach works slightly different than for Delft3D-FLOW and WAVE. Creating a an XBeach model contains of 4 steps:
- 'Draw grid outline': this is similar as for FLOW and WAVE. However, keep in mind that the origin should be offshore en the coast at 90 degrees fro the right-side of this point.
- Define grid optimization settings. The grid for XBeach will be optimized in cross-shore and longshore direction. Settings related to this optimization are:
- Cross-shore direction: maximum dx (dx_max) and minimal dx (dx_min)
- Longshore direction: maximum dy (dy_max), minimal dy (dy_min) and longshore area of interest (%y)
- Define boundary forcing. Part of the optimization is based on storm surge level (SSL) and peak wave period (Tp). On top of that the user can define a significant wave height (Hs), wave direction (Wave dir), duration (T) and thetamin and thetamax.
- Click on: 'Generate grid and model'. The generation can take some time. Espcially Especially if you have selected a large area.
2D grid generating
Area models can only be created within the 'Quick Mode' of the Model Maker for XBeach.
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- Via the 'Quick mode': a transect will be created in the middle of your rectangular.
- Via the 'Transects': by defining grid vertices (i.e. define the coastline) and creating the transects on this line. Basic steps are:
- Draw grid vertices. Make sure the coast is at the right - side (not left, otherwise the generating will go wrong, similar to 2D generating). It is possible to continue drawing vertices, deleting or replacing them.
- It is possible to generate transects in the middle of every vertices by defining # = 0.
- It is also possible to generate a certain number of transects by defining # = number.
- Define the settings of the grid you would like to generate (i.e. dx_max, dx_min).
- Define the boundary forcing in terms of wave height, period, storm duration and SSL.
- Draw grid vertices. Make sure the coast is at the right - side (not left, otherwise the generating will go wrong, similar to 2D generating). It is possible to continue drawing vertices, deleting or replacing them.
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