TUFLOW 2D Cell Size Selection

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This page is currently under construction.

Cell size convergence is an important concept in flood modelling.


This test is designed to simulate flood wave propagation down a river valley following the failure of a dam. The valley DEM is ~0.8 km by ~17 km and the valley slopes downstream on a slope of ~0.01 in its upper region, easing to ~0.001 at lower elevations.
Mesh Converge Model Description 001.png
Mesh Converge Model Elevation 001.png
The inflow hydrograph shown below is applied as a boundary condition at the upstream end of the valley.
Mesh Converge Model Inflow 001.png


Rural Catchment Assessment Results

Mesh Converge Grid 010.pngMesh Converge Exg P4 010.pngMesh Converge Exg P5 010.png
Mesh Converge Grid 020.pngMesh Converge Exg P4 020.pngMesh Converge Exg P5 020.png
Mesh Converge Grid 050.pngMesh Converge Exg P4 050.pngMesh Converge Exg P5 050.png
Mesh Converge Grid 100.pngMesh Converge Exg P4 100.pngMesh Converge Exg P5 100.png
Mesh Converge Grid 150.pngMesh Converge Exg P4 150.pngMesh Converge Exg P5 150.png
Mesh Converge Grid 200.pngMesh Converge Exg P4 200.pngMesh Converge Exg P5 200.png
Mesh Converge Grid 250.pngMesh Converge Exg P4 250.pngMesh Converge Exg P5 250.png

Urbanised Catchment Assessment Results =

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