TUFLOW Remapping: Difference between revisions

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=Conclusion=
The benefits of using the combination of Quadtree mesh and Sub-grid Sampling method are many. In this page we focused on the ability of represent the sub-grid scale geometry by SGS method, which allows user to apply coarser mesh to reduce the simulation time. However, the interpolation of depth output of at coarse SGS mesh can be challenging as illustrated in the examples above. While we are developing high resolution output feature to tackle this problem, the remapping functions of the utility can be used to post process a high resolution depth results from water level output.
When the spatial resolution of a model is increased (i.e. cell size reduced) review of result sensitivity at 1D/2D SX link locations is recommended. This can be done quickly and easily by plotting 1D results and checking for unwanted oscillations. This page demonstrated some useful methods for stabilising 1D/2D boundary (SX) links, in particular where the 1D structure is large in comparison to the 2D cell size. Available options that were introduced included reviewing the 1D timestep, using 1D nodes to define the 1D/2D boundary link, SX boundary lines, SX storage factors and SX boundary polygons.