Tutorial M01 Boundary Conditions QGIS - Revision history

Emilie Nielsen at 06:57, 14 August 2023

2023-08-14T06:57:43Z

← Older revision		Revision as of 16:57, 14 August 2023
Line 28:		Line 28:
	<li>Select the eye icon 'Edit Advanced Configuration' and tick the '''2d_code_M01_001_R'''. <br>		<li>Select the eye icon 'Edit Advanced Configuration' and tick the '''2d_code_M01_001_R'''. <br>
	<br>		<br>
	~~[[File:~~Animation_M01_Boundary_01b.~~gif]]~~ <br>		{{Video\|name=Animation_M01_Boundary_01b.mp4\|width=1274}} <br>
	</ol>		</ol>
	<br>		<br>
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	:*Name = FC01		:*Name = FC01
	<br>		<br>
	~~[[File:~~Animation_M01_Boundary_02b.~~gif]]~~ <br>		{{Video\|name=Animation_M01_Boundary_02b.mp4\|width=1274}} <br>
	<br>		<br>
	</ol>		</ol>
Line 54:		Line 54:
	<li>Toggle the editing off to save the edits.<br>		<li>Toggle the editing off to save the edits.<br>
	<br>		<br>
	~~[[File:~~Animation_M01_Boundary_03b.~~gif]]~~ <br>		{{Video\|name=Animation_M01_Boundary_03b.mp4\|width=1274}}<br>
	<br>		<br>
	</ol>		</ol>
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	<li>Select 'Apply Label to Current Layer' from the TUFLOW Plugin toolbar to see the names of each polygon.		<li>Select 'Apply Label to Current Layer' from the TUFLOW Plugin toolbar to see the names of each polygon.
	<br><br>		<br><br>
	~~[[File:~~Animation_M01_Boundary_04c.~~gif]]~~		{{Video\|name=Animation_M01_Boundary_04c.mp4\|width=1274}}
	</ol><br>		</ol><br>

Emilie Nielsen: /* Source Area Boundary (2d_sa) */

2023-06-02T04:20:24Z

Source Area Boundary (2d_sa)

← Older revision		Revision as of 14:20, 2 June 2023
Line 64:		Line 64:
	<li>Copy and paste all files named '''2d_sa_M01_001_R''' from the '''Module_01\Tutorial_Data''' to the '''Module_01\TUFLOW\model\gis''' folder.		<li>Copy and paste all files named '''2d_sa_M01_001_R''' from the '''Module_01\Tutorial_Data''' to the '''Module_01\TUFLOW\model\gis''' folder.
	<li>Open the shapefile in QGIS and select ‘Apply TUFLOW Styles to Current Layer'.		<li>Open the shapefile in QGIS and select ‘Apply TUFLOW Styles to Current Layer'.
	<li>Select 'Label' from the TUFLOW ~~plugin~~ toolbar to see the names of each polygon.		<li>Select 'Apply Label to Current Layer' from the TUFLOW Plugin toolbar to see the names of each polygon.
	<br><br>		<br><br>
	[[File:~~Animation_M01_Boundary_04b~~.gif]]		[[File:Animation_M01_Boundary_04c.gif]]
	</ol><br>		</ol><br>

Emilie Nielsen: /* Source Area Boundary (2d_sa) */

2023-04-27T01:14:26Z

Source Area Boundary (2d_sa)

← Older revision		Revision as of 11:14, 27 April 2023
Line 62:		Line 62:
	The source area layer is provided:<br>		The source area layer is provided:<br>
	<ol>		<ol>
	<li>Copy and paste all files named '2d_sa_M01_001_R' from the '''Module_01\Tutorial_Data''' to the '''Module_01\TUFLOW\model\gis''' folder.		<li>Copy and paste all files named '''2d_sa_M01_001_R''' from the '''Module_01\Tutorial_Data''' to the '''Module_01\TUFLOW\model\gis''' folder.
	<li>Open the shapefile in QGIS and select ‘Apply TUFLOW Styles to Current Layer'.		<li>Open the shapefile in QGIS and select ‘Apply TUFLOW Styles to Current Layer'.
	<li>Select 'Label' from the TUFLOW plugin toolbar to see the names of each polygon.		<li>Select 'Label' from the TUFLOW plugin toolbar to see the names of each polygon.

Emilie Nielsen: /* Flow vs Time and Head vs Flow Boundaries (2d_bc) */

2023-04-27T01:14:00Z

Flow vs Time and Head vs Flow Boundaries (2d_bc)

← Older revision		Revision as of 11:14, 27 April 2023
Line 20:		Line 20:
	<li>Select '2d_bc' from the Empty Type list.		<li>Select '2d_bc' from the Empty Type list.
	<li>In the Run ID box write 'M01_001'.		<li>In the Run ID box write 'M01_001'.
	<li>Tick the 'Lines' Geometry Type and hit 'OK'. The '2d_bc_M01_001_L' appears in the QGIS Layers panel.		<li>Tick the 'Lines' Geometry Type and hit 'OK'. The '''2d_bc_M01_001_L''' appears in the QGIS Layers panel.
	</ol>		</ol>
	Enable snapping:		Enable snapping:
Line 26:		Line 26:
	<li>Right click anywhere in the Toolbar panel and tick on the Snapping Toolbar.		<li>Right click anywhere in the Toolbar panel and tick on the Snapping Toolbar.
	<li>Select the magnet icon 'Enable Snapping' and 'All Layers > Advanced Configuration', an eye icon appears.		<li>Select the magnet icon 'Enable Snapping' and 'All Layers > Advanced Configuration', an eye icon appears.
	<li>Select the eye icon 'Edit Advanced Configuration' and tick the '2d_code_M01_001_R'. <br>		<li>Select the eye icon 'Edit Advanced Configuration' and tick the '''2d_code_M01_001_R'''. <br>
	<br>		<br>
	[[File:Animation_M01_Boundary_01b.gif]] <br>		[[File:Animation_M01_Boundary_01b.gif]] <br>
Line 34:		Line 34:
	<ol>		<ol>
	<li>Zoom into the creek at the south-western edge of the code polygon.		<li>Zoom into the creek at the south-western edge of the code polygon.
	<li>Right click the '2d_bc_M01_001_L' file in the Layers panel and toggle on editing.		<li>Right click the '''2d_bc_M01_001_L''' file in the Layers panel and toggle on editing.
	<li>Select 'Add Line Feature'.		<li>Select 'Add Line Feature'.
	<li>Create a line joining the four vertices as shown below. With the snapping option on, the cursor snaps to the existing vertices on the '2d_code_M01_001_R' layer.		<li>Create a line joining the four vertices as shown below. With the snapping option on, the cursor snaps to the existing vertices on the '''2d_code_M01_001_R''' layer.
	<li>When selecting the final vertex, use the right mouse button to terminate the line, an attributes dialog appears. In the attributes, specify the boundary as flow vs time (QT) boundary with the name 'FC01'.		<li>When selecting the final vertex, use the right mouse button to terminate the line, an attributes dialog appears. In the attributes, specify the boundary as flow vs time (QT) boundary with the name 'FC01'.
	:*Type = QT		:*Type = QT
Line 47:		Line 47:
	<ol>		<ol>
	<li>Zoom into the creek at the north edge of the code polygon.		<li>Zoom into the creek at the north edge of the code polygon.
	<li>Add another line in the '2d_bc_M01_001_L' layer connecting the four vertices shown below. <br>		<li>Add another line in the '''2d_bc_M01_001_L''' layer connecting the four vertices shown below. <br>
	<li>In the attributes, specify head vs flow (HQ), stage-discharge boundary, and water surface slope via the 'b' attribute of '0.01'.		<li>In the attributes, specify head vs flow (HQ), stage-discharge boundary, and water surface slope via the 'b' attribute of '0.01'.
	:*Type = HQ		:*Type = HQ

Pavlina Monhartova: /* Flow vs Time and Head vs Flow Boundaries (2d_bc) */

2023-04-20T05:53:02Z

Flow vs Time and Head vs Flow Boundaries (2d_bc)

← Older revision		Revision as of 15:53, 20 April 2023
Line 20:		Line 20:
	<li>Select '2d_bc' from the Empty Type list.		<li>Select '2d_bc' from the Empty Type list.
	<li>In the Run ID box write 'M01_001'.		<li>In the Run ID box write 'M01_001'.
	<li>Tick the 'Lines' Geometry Type and hit 'OK'. The '''2d_bc_M01_001_L~~.shp''~~' appears in the QGIS Layers panel.		<li>Tick the 'Lines' Geometry Type and hit 'OK'. The '2d_bc_M01_001_L' appears in the QGIS Layers panel.
	</ol>		</ol>
	Enable snapping:		Enable snapping:

Emilie Nielsen: /* Method */

2023-04-20T04:18:56Z

Method

← Older revision		Revision as of 14:18, 20 April 2023
Line 28:		Line 28:
	<li>Select the eye icon 'Edit Advanced Configuration' and tick the '2d_code_M01_001_R'. <br>		<li>Select the eye icon 'Edit Advanced Configuration' and tick the '2d_code_M01_001_R'. <br>
	<br>		<br>
	[[File:~~Animation M01 Boundary 01a~~.gif]] <br>		[[File:Animation_M01_Boundary_01b.gif]] <br>
	</ol>		</ol>
	<br>		<br>
Line 41:		Line 41:
	:*Name = FC01		:*Name = FC01
	<br>		<br>
	[[File:~~Animation M01 Boundary 02a~~.gif]] <br>		[[File:Animation_M01_Boundary_02b.gif]] <br>
	<br>		<br>
	</ol>		</ol>
Line 54:		Line 54:
	<li>Toggle the editing off to save the edits.<br>		<li>Toggle the editing off to save the edits.<br>
	<br>		<br>
	[[File:~~Animation M01 Boundary 03a~~.gif]] <br>		[[File:Animation_M01_Boundary_03b.gif]] <br>
	<br>		<br>
	</ol>		</ol>
Line 66:		Line 66:
	<li>Select 'Label' from the TUFLOW plugin toolbar to see the names of each polygon.		<li>Select 'Label' from the TUFLOW plugin toolbar to see the names of each polygon.
	<br><br>		<br><br>
	[[File:~~Animation M01 Boundary 04a~~.gif]]		[[File:Animation_M01_Boundary_04b.gif]]
	</ol><br>		</ol><br>

Emilie Nielsen: /* Flow vs Time and Head vs Flow Boundaries (2d_bc) */

2023-04-13T23:05:30Z

Flow vs Time and Head vs Flow Boundaries (2d_bc)

← Older revision		Revision as of 09:05, 14 April 2023
Line 34:		Line 34:
	<ol>		<ol>
	<li>Zoom into the creek at the south-western edge of the code polygon.		<li>Zoom into the creek at the south-western edge of the code polygon.
	<li>Right click the '''2d_bc_M01_001_L~~.shp''~~' file in the Layers panel and toggle on editing.		<li>Right click the '2d_bc_M01_001_L' file in the Layers panel and toggle on editing.
	<li>Select 'Add Line Feature'.		<li>Select 'Add Line Feature'.
	<li>Create a line joining the four vertices as shown below. With the snapping option on, the cursor snaps to the existing vertices on the '''2d_code_M01_001_R~~.shp''~~' layer.		<li>Create a line joining the four vertices as shown below. With the snapping option on, the cursor snaps to the existing vertices on the '2d_code_M01_001_R' layer.
	<li>When selecting the final vertex, use the right mouse button to terminate the line, an attributes dialog appears. In the attributes, specify the boundary as flow vs time (QT) boundary with the name 'FC01'.		<li>When selecting the final vertex, use the right mouse button to terminate the line, an attributes dialog appears. In the attributes, specify the boundary as flow vs time (QT) boundary with the name 'FC01'.
	:*Type = QT		:*Type = QT
Line 47:		Line 47:
	<ol>		<ol>
	<li>Zoom into the creek at the north edge of the code polygon.		<li>Zoom into the creek at the north edge of the code polygon.
	<li>Add another line in the '''2d_bc_M01_001_L~~.shp''~~' layer connecting the four vertices shown below. <br>		<li>Add another line in the '2d_bc_M01_001_L' layer connecting the four vertices shown below. <br>
	<li>In the attributes, specify head vs flow (HQ), stage-discharge boundary, and water surface slope via the 'b' attribute of '0.01'.		<li>In the attributes, specify head vs flow (HQ), stage-discharge boundary, and water surface slope via the 'b' attribute of '0.01'.
	:*Type = HQ		:*Type = HQ

ElizaCollison: Created page with "= Introduction = QGIS is used to create the boundary condition layers. Three different types of boundaries are introduced:
:*2d_bc: flow vs time - used as external upstr..."

2022-05-10T13:56:22Z

Created page with "= Introduction = QGIS is used to create the boundary condition layers. Three different types of boundaries are introduced: :*2d_bc: flow vs time - used as external upstr..."

New page

= Introduction =
QGIS is used to create the boundary condition layers. Three different types of boundaries are introduced: 
:*2d_bc: flow vs time - used as external upstream boundary;
:*2d_bc: head vs flow (stage-discharge) - used as downstream boundary; and
:*2d_sa: flow vs time - used as internal boundary.

TUFLOW shapefile naming convention: 
:*Points are stored in a '''filename_P.shp'''.
:*Lines are stored in a '''filename_L.shp'''.
:*Regions or polygons are stores in a '''filename_R.shp'''. 
 

= Method =
=== Flow vs Time and Head vs Flow Boundaries (2d_bc) ===
The 2d_bc boundaries are external boundaries applied as lines. They are snapped to the edge of the active model area, the code polygon, and digitised perpendicular to the flow. Digitising the boundary on an angle to the flow could cause instabilities and oscillations. 

Create the 2d_bc layer using the TUFLOW plugin: 
<ol>
<li>Click on the ‘Import Empty File’ symbol from the TUFLOW plugin toolbar.
<li>Select '2d_bc' from the Empty Type list.
<li>In the Run ID box write 'M01_001'.
<li>Tick the 'Lines' Geometry Type and hit 'OK'. The '''2d_bc_M01_001_L.shp''' appears in the QGIS Layers panel.
</ol>
Enable snapping:
<ol>
<li>Right click anywhere in the Toolbar panel and tick on the Snapping Toolbar.
<li>Select the magnet icon 'Enable Snapping' and 'All Layers > Advanced Configuration', an eye icon appears.
<li>Select the eye icon 'Edit Advanced Configuration' and tick the '2d_code_M01_001_R'. 
 
[[File:Animation M01 Boundary 01a.gif]] 
</ol>
 
Digitise the upstream boundary: 
<ol>
<li>Zoom into the creek at the south-western edge of the code polygon.
<li>Right click the '''2d_bc_M01_001_L.shp''' file in the Layers panel and toggle on editing.
<li>Select 'Add Line Feature'.
<li>Create a line joining the four vertices as shown below. With the snapping option on, the cursor snaps to the existing vertices on the '''2d_code_M01_001_R.shp''' layer.
<li>When selecting the final vertex, use the right mouse button to terminate the line, an attributes dialog appears. In the attributes, specify the boundary as flow vs time (QT) boundary with the name 'FC01'.
:*Type = QT
:*Name = FC01
 
[[File:Animation M01 Boundary 02a.gif]] 
 
</ol>
Digitise the downstream boundary: 
<ol>
<li>Zoom into the creek at the north edge of the code polygon.
<li>Add another line in the '''2d_bc_M01_001_L.shp''' layer connecting the four vertices shown below. 
<li>In the attributes, specify head vs flow (HQ), stage-discharge boundary, and water surface slope via the 'b' attribute of '0.01'.
:*Type = HQ
:*b = 0.01
Note: The value of 0.01 is in metres per metre and corresponds to a 1% water surface slope. TUFLOW automatically creates a stage-discharge curve based on the underlying topography, roughness and the water surface slope. If a 'Name' is specified for HQ type boundary, the stage-discharge relationship would be defined in the boundary database and the 'b' attribute would remain blank. 
<li>Toggle the editing off to save the edits. 
 
[[File:Animation M01 Boundary 03a.gif]] 
 
</ol>

=== Source Area Boundary (2d_sa) ===
The 2d_sa boundaries are internal boundaries digitised as polygons applying flow or rainfall directly onto the 2D domain. 
The source area layer is provided: 
<ol>
<li>Copy and paste all files named '2d_sa_M01_001_R' from the '''Module_01\Tutorial_Data''' to the '''Module_01\TUFLOW\model\gis''' folder.
<li>Open the shapefile in QGIS and select ‘Apply TUFLOW Styles to Current Layer'.
<li>Select 'Label' from the TUFLOW plugin toolbar to see the names of each polygon.
 
[[File:Animation M01 Boundary 04a.gif]]
</ol> 

= Conclusion =
:*The 2d_bc layer was created containing an upstream flow boundary and a downstream stage-discharge boundary.
:*The 2d_sa layer was created to define the internal source area boundary.
 
{{Tips Navigation
|uplink=[[Tutorial_M01#Spatial_Definition_of_Boundary_Conditions| Back to Module 1 Main Page]]
}}

Tutorial M01 Boundary Conditions QGIS - Revision history

Emilie Nielsen at 06:57, 14 August 2023

Emilie Nielsen: /* Source Area Boundary (2d_sa) */

Emilie Nielsen: /* Source Area Boundary (2d_sa) */

Emilie Nielsen: /* Flow vs Time and Head vs Flow Boundaries (2d_bc) */

Pavlina Monhartova: /* Flow vs Time and Head vs Flow Boundaries (2d_bc) */

Emilie Nielsen: /* Method */

Emilie Nielsen: /* Flow vs Time and Head vs Flow Boundaries (2d_bc) */

ElizaCollison: Created page with "= Introduction = QGIS is used to create the boundary condition layers. Three different types of boundaries are introduced: :*2d_bc: flow vs time - used as external upstr..."

ElizaCollison: Created page with "= Introduction = QGIS is used to create the boundary condition layers. Three different types of boundaries are introduced:
:*2d_bc: flow vs time - used as external upstr..."