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Line 6: ===Solution Scheme, Cell Discretisation and Parallelisation=== TUFLOW HPC is an explicit solver for the full 2D Shallow Water Equations (SWE), including a sub-grid scale eddy viscosity model. The scheme is both volume and momentum conserving, is 2nd order in space and 4th order in time, with adaptive or fixed timestepping. It is unconditionally stable. TUFLOW HPC's computational approach differs from TUFLOW Classic, which is a 2nd order (space) implicit finite difference solver. Both TUFLOW HPC and Classic solve the 2D ~~Shallow Water Equations~~SWE on the same uniform Cartesian grid configuration. Computationally each 2D cell includes 9 sub-grid points.<br> [[File: HPC Cell Design.PNG \|300px]]<br>

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