TUFLOW CATCH Tutorial M02 Draft

Page Under Construction

Introduction

In this module, a TUFLOW CATCH hydrology model is developed.

TUFLOW CATCH Tutorial Module 2 is built from the model created in TUFLOW CATCH Module 1. The completed TUFLOW CATCH Module 01 is provided in the TUFLOW_CATCH_Module_02\Modelling folder of the download dataset as the starting point for this tutorial. If you are not already familiar with TUFLOW CATCH, we recommend completing TUFLOW CATCH Module 1 prior to starting this tutorial.

GIS Inputs

Create, import and view input data:

• QGIS GIS Inputs - TUFLOW HPC
• QGIS GIS Inputs - TUFLOW FV

Simulation Control Files

The following steps will require use of a text editor. The tutorial demonstration uses Notepad++. For its configuration information refer to Notepad++ Tips.

TUFLOW Boundary Control File (TBC)

1. Save a copy of TC01_001.tbc as TC02_001.tbc in the TUFLOW_CATCH_Module_02\Modelling\TUFLOW\model folder.
2. Open the TC02_001.tbc in a text editor and update the reference to the 1D/2D culvert connections:
   Read GIS BC == gis\2d_bc_TC02_001_P.shp ! Links the two upstream 1D culverts to the 2D domain
   Read GIS BC == gis\2d_bc_TC02_001_L.shp ! Links the two upstream 1D culverts to the 2D domain
   
3. Save the TBC.

TUFLOW ESTRY Control File (ECF)

1. Save a copy of TC01_001.ecf as TC02_001.ecf in the TUFLOW_CATCH_Module_02\Modelling\TUFLOW\model folder.
2. Open the TC02_001.ecf in a text editor and update the following line to reference the new 1d_nwk layer (containing the two upstream culverts):
   Read GIS Network == gis\1d_nwk_TC02_001_L.shp ! Defines the two upstream culverts
3. Save the ECF.

TUFLOW CATCH Control File (TCC)

intro...
The TUFLOW CATCH QGIS plugin has created a .tcc template file populated with .... Including adding the exe file paths.

Global Settings

Applied to the whole simulation. more info

1. Navigate to the TUFLOW_CATCH_Module_01\Modelling\TUFLOWCatch\runs folder and open TC01_001.tcc into a text editor.
2. In the 'Simulation Settings' section, update the time commands:
   Start Time == 01/01/2021 10:00:00 ! Specifies the simulation start time
   End Time == 01/01/2021 13:00:00 ! Specifies the simulation end time
   
3. In the 'Boundary Condition Configuration' section, update the BC and CSV output intervals:
   Catch BC Output Interval Nodestring == 300 ! Outputs BC nodestring data every 300 seconds
   Catch BC Output Interval Lateral == 300 ! Outputs BC lateral data every 300 seconds
   CSV Write Frequency Day == 0.01 ! Writes CSV output every 0.01 days
   

Catchment Hydraulic Model

Hydraulic model specific commands - similar to TUFLOW tcf

1. Set the catchment hydraulic model:
   Catchment Hydraulic Model == HPC
2. Set the zero date. TUFLOW HPC does not support ISODATE format, while TUFLOW FV requires it. This command ensures compatibility by setting the date in TUFLOW FV ISODATE format that corresponds to zero hours in TUFLOW HPC boundary condition files.
   Zero Date == 01/01/2021 10:00 ! Specifies the simulation start time in TUFLOW FV ISODATE format
   
3. In the 'GIS' section, update the following commands:
   GIS Format == SHP ! Specify SHP as the output format
   TIF Projection == ..\..\TUFLOW\model\grid\DEM.tif ! Sets the GIS projection for the output grid files
   SHP Projection? caused errors I think
4. In the 'Solver' section, set the timestep maximum and time format:
   Timestep Maximum == 2.5 ! Specifies a maximum timestep (seconds)
   Time Format == TUFLOWFV ! Specifies the time format of output results
   

Receiving Model

For this tutorial, leave all commands as is. This section of the .tcc will be discussed in the next tutorial.

Troubleshooting

See tips on common mistakes and troubleshooting steps if the model doesn't run:

• QGIS

Check Files and Results Output

Complete the steps outlined in the following links to review check files and simulation results from the TUFLOW CATCH pollutant export model simulation:

TUFLOW CATCH Tutorial 02 Check Files
TUFLOW CATCH Tutorial 02 Results