Tutorial Module04 Archive: Difference between revisions

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As with Modules 2 and 3 the GIS inputs are demonstrated in ArcGIS, MapInfo, SMS and QGIS. At each stage please select your GIS package for instructions.
==1D Cross-Sections==
A 1D model requires cross-sections for processing of the channel geometry. There are a number of different formats for cross-sections to be input to TUFLOW. In this module we will be using an offset-elevation approach (XZ). This is a typical format for inputting cross-sections however, other options include height-width (HW) and MIKE11 format inputs. These are not covered in this tutorial, however the general process is very similar. To save time, the locations and XZ profiles for the 1D cross sections are provided. The XZ profiles were automatically extracted from the DEM triangulation using the 12D software (www.12d.com) with the aid of the TUFLOW utility 12da_to_from_mif12da_to_from_GIS.exe using the -xs option (see [[12da_to_from_mif12da_to_from_GIS | 12da_to_from_mif12da_to_from_GIS wiki page]]). The SMS TUFLOW interface has a similar and easier process, noting that a licence for the SMS TUFLOW interface is required to save the cross-sections. It is more common for this information to come from surveyed cross-sections. If the survey has been provided as x-y-z points, or a a GIS layer of points, the xs_Generator utility can be used to create the cross-sections in a TUFLOW format. The xs_Generator utility is described in the [[XsGenerator |XsGenerator wiki page]].<br>
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For each cross-section there is an individual comma separated variable (.csv) file. The 1d_xs layer contains a link to the source .csv file at every cross-section location. <br>
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<li>After this command in the .tcf, add the following command to link the new 1D control file:</li>
<font color="blue"><tt>ESTRY Control File </tt></font> <font color="red"><tt>== </tt></font> <tt>..\model\M04_1d_001.ecf</tt><br>
<li>Depending on the speed of your computer, you may have noticed in the previous three modules that when TUFLOW is running, it is hard to read the TUFLOW console output because it updates too quickly. We can reduce the frequency of output to the DOSconsole screenwindow and also the TUFLOW Log File (.tlf). Include the following command at the end of the .tcf with the other output commands:<br>
<font color="blue"><tt>Screen/Log Display Interval </tt></font> <font color="red"><tt>== </tt></font> <tt>40</tt><br>
TUFLOW will write the output every 40 timesteps. For the 1.5 second timestep this means we will get output every 60 seconds of simulation time.<br>
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*[[TUFLOW_Message_2060 | Error 2060 - Could not find a CN connection snapped to the end of HX line]]
*[[TUFLOW_Message_2024 | Error 2024 - Could not find a 1D node snapped to CN line.]]
*[[Only_TUFLOW_DOS_Window_ArchiveOnly_TUFLOW_Console_Window_Archive | Why does the TUFLOW DOSconsole Windowwindow open, though the TCF isn’t read and the simulation doesn’t execute?]]
 
= Advanced - HPC Solver (Optional) =
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==Results==
Using the methods described above in the <u>[[Tutorial_Module01_Archive#Viewing_Results | Viewing Results]]</u> section of Module 1.
* Check the simulation logs in the DOSconsole window, .tlf and .hpc.tlf log files.
* View the results in your preferred package.
Do the logs and results appear different to the TUFLOW Classic simulation?