View source for TUFLOW 2D Cell Size Selection

This page is currently under construction.
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=Introduction=
This page of the TUFLOW Wiki discusses 2D cell size convergence. Cell size convergence refers to the tendency for model results to tend towards a common answer as cell size decreases. This behaviour occurs due to topographic features that influence the hydraulic flow behaviour better approximating reality as resolution increases. The series of creek cross-section images below demonstrate this. As model resolution increases from 20m to 5m the modelled topography progressively matches the real-world geometry more closely.

= Rural Catchment Scenario Assessment =

== Rural Model Description ==
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. <br>
[[File:Mesh_Converge_Model_Description_001.png|500px]]<br>
[[File:Mesh_Converge_Model_Elevation_001.png|500px]]<br>
The inflow hydrograph shown below is applied as a boundary condition at the upstream end of the valley. <br>
[[File:Mesh Converge Model Inflow 001.png|500px]]<br>

== Rural Assessment Results ==

{| class="wikitable " 

| '''Cell Size''' || '''Location 4 Result'''|| '''Location 5 Result''' || '''Mesh Resolution Figure'''
|-
| 10m || [[File:Mesh_Converge_Exg_P4_010.png|500px]] || [[File:Mesh Converge Exg P5 010.png|500px]] ||[[File:Mesh Converge Grid 010.png|500px]]
|-
| 20m || [[File:Mesh Converge Exg P4 020.png|500px]] || [[File:Mesh Converge Exg P5 020.png|500px]]  || [[File:Mesh_Converge_Grid_020.png|500px]]
|-
| 50m || [[File:Mesh Converge Exg P4 050.png|500px]] || [[File:Mesh Converge Exg P5 050.png|500px]] ||[[File:Mesh_Converge_Grid_050.png|500px]]
|-
| 100m || [[File:Mesh Converge Exg P4 100.png|500px]]|| [[File:Mesh Converge Exg P5 100.png|500px]]  || [[File:Mesh Converge Grid 100.png|500px]]
|-
| 150m || [[File:Mesh Converge Exg P4 150.png|500px]] || [[File:Mesh Converge Exg P5 150.png|500px]] ||[[File:Mesh Converge Grid 150.png|500px]]
|-
| 200m || [[File:Mesh Converge Exg P4 200.png|500px]] || [[File:Mesh Converge Exg P5 200.png|500px]] ||[[File:Mesh Converge Grid 200.png|500px]]
|-
| 250m || [[File:Mesh Converge Exg P4 250.png|500px]] || [[File:Mesh Converge Exg P5 250.png|500px]] ||[[File:Mesh Converge Grid 250.png|500px]]
|}

==Rural Assessment Result Discussion==

= Urbanised Catchment Scenario Assessment =

== Urban Model Description ==

== Urban Assessment Results ==
== Urban Assessment Result Discussion==