FM Tute M01 ARC 1D2D Links - Revision history

Tuflowduncan: /* Method */

2018-12-14T09:09:56Z

Method

← Older revision		Revision as of 19:09, 14 December 2018
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	<li>The CN and HX lines between nodes FC02.06 and FC02.01d along the tributary have not been digitised. Digitise these lines to connect the nodes to the 2D domain.<br>		<li>The CN and HX lines between nodes FC02.06 and FC02.01d along the tributary have not been digitised. Digitise these lines to connect the nodes to the 2D domain.<br>
	To digitise the CN lines, make the <b> 2d_bc_FMT_M01_HX_001_L.SHP </b> layer editable and ensure snapping is turned on. For each node in the '''1d_x1d_FMT_M01_nodes_001_P.SHP''' layer, draw a line from the node to the HX line. The line must snap to both the node and the HX line. Draw two lines for each node, one to the left bank and one to the right bank. In the 'Type' attribute of each line, type 'CN'.<br>		To digitise the CN lines, make the <b> 2d_bc_FMT_M01_HX_001_L.SHP </b> layer editable and ensure snapping is turned on. For each node in the '''1d_x1d_FMT_M01_nodes_001_P.SHP''' layer, draw a line from the node to the HX line. The line must snap to both the node and the HX line. Draw two lines for each node, one to the left bank and one to the right bank. In the 'Type' attribute of each line, type 'CN'. Assign the digitised CN lines an ‘f' attribute’ of ‘1’. This sets the weighting to be applied in distributing the water level from the 1D node to the 2D cell. <br>
	<br>The figure below shows how the nodes are connected at the confluence. Note that all Flood Modeller nodes at the junction are present within the 1d_x1D_nodes layer, and are connected to the 2D domain. The HX lines are broken around the junction. </li>		<br>The figure below shows how the nodes are connected at the confluence. Note that all Flood Modeller nodes at the junction are present within the 1d_x1D_nodes layer, and are connected to the 2D domain. The HX lines are broken around the junction. </li>
	<br>		<br>

Andrew.Sims: /* Method */

2017-01-04T11:14:12Z

Method

← Older revision		Revision as of 21:14, 4 January 2017
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	In the example below, the HX lines are broken between FC01.35 and FC01.34 as a culvert is located between these nodes.		In the example below, the HX lines are broken between FC01.35 and FC01.34 as a culvert is located between these nodes.
	<br>		<br>
	[[File:~~FMT~~ ~~1D-2D Broken HX FM~~.JPG\|900px]] [[File:FMT 1D-2D Broken HX.JPG\|900px]]		[[File:FM Junction.JPG\|900px]] [[File:FMT 1D-2D Broken HX.JPG\|900px]]

	<li>The CN and HX lines between nodes FC02.06 and FC02.01d along the tributary have not been digitised. Digitise these lines to connect the nodes to the 2D domain.<br>		<li>The CN and HX lines between nodes FC02.06 and FC02.01d along the tributary have not been digitised. Digitise these lines to connect the nodes to the 2D domain.<br>

Steph.dufour at 09:35, 4 January 2017

2017-01-04T09:35:37Z

← Older revision		Revision as of 19:35, 4 January 2017
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	[[File:1d 2d FM link 01.jpg\|800px]]		[[File:1d 2d FM link 01.jpg\|800px]]
	<br>		<br>
	As the water level in ~~the~~ 2D is ~~calculated~~ at the cell ~~centres,~~ ~~once~~ the ~~water~~ ~~level~~ in Flood Modeller ~~exceeds~~ the elevation in the boundary cell ~~water~~ ~~can~~ ~~enter~~ or ~~leave~~ the ~~model.~~ If there is a levee or flood defence, it is important that we use breaklines in the model to ensure that the elevations of the 2D cells are consistent with the levee crest. This will be described in the next section of the tutorial. The next four images show a section view of the 1D/2D link and how this may progress during a flood event.		Once the water level in Flood Modeller exceeds the elevation in the boundary cell water can enter or leave the model. Similar to a Flood Modeller lateral spill or lateral inflow, the discharge is distributed laterally along the length of the HX line. Note that it is the elevation of the HX boundary cell centres that determines when the spill starts to occur and not the cross section within Flood Modeller. If there is a levee or flood defence, it is important that we use breaklines in the model to ensure that the elevations of the 2D cells are consistent with the levee crest. This will be described in the next section of the tutorial. The next four images show a section view of the 1D/2D link and how this may progress during a flood event.<br>

	<br>		<br>
	[[File:M04 1d2d 01.png\|300px]]		[[File:M04 1d2d 01.png\|300px]]

Steph.dufour at 09:20, 4 January 2017

2017-01-04T09:20:59Z

← Older revision		Revision as of 19:20, 4 January 2017
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	Depending on the water level in the surrounding 2D cells, flow can either enter or leave the HX cells. The volume of water entering or leaving the 2D boundary is added or subtracted from the 1D Flood Modeller model to preserve volume. We must connect the HX lines to the 1D Flood Modeller model. This is done using CN type lines in the 2d_bc layer, where a CN line is connected to the HX line, the water level from the 1D Flood Modeller nodes is transferred to the HX line. In between 1D nodes, a linear interpolation of water level is applied. This is shown in the figure below.		Depending on the water level in the surrounding 2D cells, flow can either enter or leave the HX cells. The volume of water entering or leaving the 2D boundary is added or subtracted from the 1D Flood Modeller model to preserve volume. We must connect the HX lines to the 1D Flood Modeller model. This is done using CN type lines in the 2d_bc layer, where a CN line is connected to the HX line, the water level from the 1D Flood Modeller nodes is transferred to the HX line. In between 1D nodes, a linear interpolation of water level is applied. This is shown in the figure below.
	<br>		<br>
			[[File:1d 2d FM link 01.jpg\|800px]]
	'''INSERT FIGURE'''
	<br>		<br>
	As the water level in the 2D is calculated at the cell centres, once the water level in Flood Modeller exceeds the elevation in the boundary cell water can enter or leave the model. If there is a levee or flood defence, it is important that we use breaklines in the model to ensure that the elevations of the 2D cells are consistent with the levee crest. This will be described in the next section of the tutorial. The next four images show a section view of the 1D/2D link and how this may progress during a flood event.		As the water level in the 2D is calculated at the cell centres, once the water level in Flood Modeller exceeds the elevation in the boundary cell water can enter or leave the model. If there is a levee or flood defence, it is important that we use breaklines in the model to ensure that the elevations of the 2D cells are consistent with the levee crest. This will be described in the next section of the tutorial. The next four images show a section view of the 1D/2D link and how this may progress during a flood event.

Steph.dufour at 21:43, 3 January 2017

2017-01-03T21:43:04Z

← Older revision		Revision as of 07:43, 4 January 2017
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	<ol>		<ol>
	=Introduction=		=Introduction=
			In this section we will apply a water level boundary to the 2D cells along the 1D/2D interface. In the 2D boundary condition (2d_bc) GIS layer, we define the location at which this link occurs. The 2D water level applied at the 2D boundary cells is calculated in the 1D Flood Modeller component. The terminology used in TUFLOW is a '''HX''' type boundary on the 2D cells, with the '''H''' indicating that a '''H'''ead (water level) boundary is used and the '''X''' indicating the value is coming from an e'''X'''ternal model (in this case Flood Modeller).
	In this section we will create the 1D/2D links to link the Flood Modeller 1D component to the TUFLOW 2D domain.<br>
			Depending on the water level in the surrounding 2D cells, flow can either enter or leave the HX cells. The volume of water entering or leaving the 2D boundary is added or subtracted from the 1D Flood Modeller model to preserve volume. We must connect the HX lines to the 1D Flood Modeller model. This is done using CN type lines in the 2d_bc layer, where a CN line is connected to the HX line, the water level from the 1D Flood Modeller nodes is transferred to the HX line. In between 1D nodes, a linear interpolation of water level is applied. This is shown in the figure below.
	As described on the previous page, this consists of a boundary line with type "HX" and a series of connection lines that connect the 1D computation points to the HX line. <br>
	The HS line is how flow is transfered between the 2D TUFLOW domain and the 1D Flood Modeller Domain.<br>
	For this tutorial the HX lines and a sample of the "CN" lines have been provided.
	<br>		<br>
			'''INSERT FIGURE'''
	The empty GIS files used in this tutorial are the same as those created in [http://wiki.tuflow.com/index.php?title=Tutorial_Module01#Set_GIS_Projection_and_Create_Empty_.28Template.29_Files step 4 of tutorial module 1].<br>
			<br>
	These template files set up how to enter the GIS data for TUFLOW to read.
			As the water level in the 2D is calculated at the cell centres, once the water level in Flood Modeller exceeds the elevation in the boundary cell water can enter or leave the model. If there is a levee or flood defence, it is important that we use breaklines in the model to ensure that the elevations of the 2D cells are consistent with the levee crest. This will be described in the next section of the tutorial. The next four images show a section view of the 1D/2D link and how this may progress during a flood event.
			<br>
			[[File:M04 1d2d 01.png\|300px]]
			[[File:M04 1d2d 02.png\|300px]]
			[[File:M04 1d2d 03.png\|300px]]
			[[File:M04 1d2d 04.png\|300px]]

			Often HX lines are located along the top of a levee (natural or artificial) or flood defence running along the river bank. When carving a 1D channel through a 2D domain, the HX line must be either on the top of the levee or on the inside of the levee (closest to the channel). If the HX line is located on the other side of the levee away from the channel, the effect of the levee on water flow is <u>'''not'''</u> modelled. In the sections above, it can be seen that the boundary cell is along the levee and the interaction between the channel and the floodplain (1D and 2D) occurs at the correct elevation. <br>

	=Method=		=Method=
	<li>Import in an empty <b>2d_bc_empty_L.shp</b> layer from within the FMT_tutorial\FMT_M01\TUFLOW\model\gis\empty folder. </li>		<li>Import in an empty <b>2d_bc_empty_L.shp</b> layer from within the '''FMT_tutorial\FMT_M01\TUFLOW\model\gis\empty''' folder. </li>
	<li>Save the empty layer as <b>2d_bc_FMT_M01_HX_001_L.shp</b> in the FMT_tutorial\FMT_M01\TUFLOW\model\gis folder.</li>		<li>Save the empty layer as <b>2d_bc_FMT_M01_HX_001_L.shp</b> in the '''FMT_tutorial\FMT_M01\TUFLOW\model\gis''' folder.</li>
	<li>Open the <b>1D_2D_HX_Links.shp</b> GIS layer from Module_Data\Module_01\gis folder. Select all objects from within this layer, copy and paste into <b>2d_bc_FMT_M01_HX_001_L.shp</b>.</li>		<li>Open the <b>1D_2D_HX_Links.shp</b> GIS layer from '''Module_Data\Module_01\gis''' folder. Select all objects from within this layer, copy and paste into <b>2d_bc_FMT_M01_HX_001_L.shp</b>.</li>
	<li>Interrogate one of the lines running along the banks of the watercourse. These lines are the 1D/2D boundary links and have been assigned a type ‘HX’.</li>		<li>Interrogate one of the lines running along the banks of the watercourse. These lines are the 1D/2D boundary links and have been assigned a type ‘HX’.</li>
	<li>Interrogate one of the lines connecting the x1D node to the HX line. These are the connection or ‘CN’ lines that read the water level from Flood Modeller and transfers this to the HX line. </li>		<li>Interrogate one of the lines connecting the x1D node to the HX line. These are the connection or ‘CN’ lines that read the water level from Flood Modeller and transfers this to the HX line. </li>
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	<br>		<br>
	Note that where there are junctions within the Flood Modeller 1D model (i.e. at structures), both the upstream and downstream ~~nodes~~ ~~are~~ connected to TUFLOW. Refer to the below figure, the ~~Junction nodes~~ are ~~highlighted~~ in red and the upstream and downstream ~~nodes~~ are ~~highlighted~~ in green.<br>		Note that where there are junctions within the Flood Modeller 1D model (i.e. at structures), both the nodes immediately upstream and downstream must be connected to TUFLOW. Refer to the below figure where the junctions are circled in red and the upstream and downstream RIVER units are circled in green. The HX lines must be broken between the junctions as this is a requirement of a linked Flood Modeller – TUFLOW model. <br>
	~~The~~ HX lines ~~must be~~ broken between ~~the nodes~~. ~~This~~ is ~~a requirement of~~ a ~~linked~~ ~~Flood~~ ~~Modeller~~ – ~~TUFLOW~~ ~~model~~.		In the example below, the HX lines are broken between FC01.35 and FC01.34 as a culvert is located between these nodes.
	In the figure below, the HX lines are broken between FC01.35 and FC01.34 as a culvert is located between these nodes.
	<br>		<br>
	[[File:FMT 1D-2D Broken HX FM.JPG\|900px]] [[File:FMT 1D-2D Broken HX.JPG\|900px]]		[[File:FMT 1D-2D Broken HX FM.JPG\|900px]] [[File:FMT 1D-2D Broken HX.JPG\|900px]]

	<li>The CN and HX lines between nodes FC02.06 and FC02.01d along the tributary have not been digitised. Digitise these lines to connect the nodes to the 2D domain.<br>		<li>The CN and HX lines between nodes FC02.06 and FC02.01d along the tributary have not been digitised. Digitise these lines to connect the nodes to the 2D domain.<br>
	To digitise the CN lines, make the <b> 2d_bc_FMT_M01_HX_001_L.~~shp~~ </b> layer editable. For each node in the ~~<b>~~1d_x1d_FMT_M01_nodes_001_P.~~shp</b>~~ layer, draw a line ~~in your GIS pack~~ from the node to the HX line. The line must snap to both the node and the HX line. Draw two lines for each node, one to the left bank and one to the right bank. In the 'Type' attribute of each line, type 'CN'.<br>		To digitise the CN lines, make the <b> 2d_bc_FMT_M01_HX_001_L.SHP </b> layer editable and ensure snapping is turned on. For each node in the '''1d_x1d_FMT_M01_nodes_001_P.SHP''' layer, draw a line from the node to the HX line. The line must snap to both the node and the HX line. Draw two lines for each node, one to the left bank and one to the right bank. In the 'Type' attribute of each line, type 'CN'.<br>
	<br>The figure below shows how the nodes are connected at the confluence. Note that all Flood Modeller nodes at the junction are present within the 1d_x1D_nodes layer, and are connected to the 2D domain. The HX lines are broken around the junction. </li>		<br>The figure below shows how the nodes are connected at the confluence. Note that all Flood Modeller nodes at the junction are present within the 1d_x1D_nodes layer, and are connected to the 2D domain. The HX lines are broken around the junction. </li>
	<br>		<br>

Rachel: /* Method */

2016-11-16T10:26:10Z

Method

← Older revision		Revision as of 20:26, 16 November 2016
Line 10:		Line 10:

	=Method=		=Method=
	<li>Import in an empty <b>~~2d_bc_empty~~.shp</b> layer from within the FMT_tutorial\FMT_M01\TUFLOW\model\gis\empty folder. </li>		<li>Import in an empty <b>2d_bc_empty_L.shp</b> layer from within the FMT_tutorial\FMT_M01\TUFLOW\model\gis\empty folder. </li>
	<li>Save the empty layer as <b>2d_bc_FMT_M01_HX_001_L.shp</b> in the FMT_tutorial\FMT_M01\TUFLOW\model\gis folder.</li>		<li>Save the empty layer as <b>2d_bc_FMT_M01_HX_001_L.shp</b> in the FMT_tutorial\FMT_M01\TUFLOW\model\gis folder.</li>
	<li>Open the <b>1D_2D_HX_Links.shp</b> GIS layer from Module_Data\Module_01\gis folder. Select all objects from within this layer, copy and paste into <b>2d_bc_FMT_M01_HX_001_L.shp</b>.</li>		<li>Open the <b>1D_2D_HX_Links.shp</b> GIS layer from Module_Data\Module_01\gis folder. Select all objects from within this layer, copy and paste into <b>2d_bc_FMT_M01_HX_001_L.shp</b>.</li>
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	[[File:FMT 1D-2D Broken HX FM.JPG\|900px]] [[File:FMT 1D-2D Broken HX.JPG\|900px]]		[[File:FMT 1D-2D Broken HX FM.JPG\|900px]] [[File:FMT 1D-2D Broken HX.JPG\|900px]]

	<li>The CN and HX lines between nodes FC02.06 and FC02.01d along the tributary have not been digitised. Digitise these lines to connect the nodes to the 2D domain. The figure below shows how the nodes are connected at the confluence. Note that all Flood Modeller nodes at the junction are present within the 1d_x1D_nodes layer, and are connected to the 2D domain. The HX lines are broken around the junction. <~~/li~~>		<li>The CN and HX lines between nodes FC02.06 and FC02.01d along the tributary have not been digitised. Digitise these lines to connect the nodes to the 2D domain.<br>
			To digitise the CN lines, make the <b> 2d_bc_FMT_M01_HX_001_L.shp </b> layer editable. For each node in the <b>1d_x1d_FMT_M01_nodes_001_P.shp</b> layer, draw a line in your GIS pack from the node to the HX line. The line must snap to both the node and the HX line. Draw two lines for each node, one to the left bank and one to the right bank. In the 'Type' attribute of each line, type 'CN'.<br>
			<br>The figure below shows how the nodes are connected at the confluence. Note that all Flood Modeller nodes at the junction are present within the 1d_x1D_nodes layer, and are connected to the 2D domain. The HX lines are broken around the junction. </li>
	<br>		<br>
	[[File:FMT 1D-2D Linking Junction.JPG\|900px]]		[[File:FMT 1D-2D Linking Junction.JPG\|900px]]

Rachel: /* Introduction */

2016-11-16T10:25:03Z

Introduction

← Older revision		Revision as of 20:25, 16 November 2016
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	The HS line is how flow is transfered between the 2D TUFLOW domain and the 1D Flood Modeller Domain.<br>		The HS line is how flow is transfered between the 2D TUFLOW domain and the 1D Flood Modeller Domain.<br>
	For this tutorial the HX lines and a sample of the "CN" lines have been provided.		For this tutorial the HX lines and a sample of the "CN" lines have been provided.
			<br>
			The empty GIS files used in this tutorial are the same as those created in [http://wiki.tuflow.com/index.php?title=Tutorial_Module01#Set_GIS_Projection_and_Create_Empty_.28Template.29_Files step 4 of tutorial module 1].<br>
			These template files set up how to enter the GIS data for TUFLOW to read.

	=Method=		=Method=

Rachel: /* Method */

2016-11-11T12:12:48Z

Method

← Older revision		Revision as of 22:12, 11 November 2016
Line 7:		Line 7:

	=Method=		=Method=
	<li>Import in an empty <b>2d_bc_empty.shp</b> layer from within the FMT_tutorial\FMT_M01\TUFLOW\model\gis\empty folder. <li>		<li>Import in an empty <b>2d_bc_empty.shp</b> layer from within the FMT_tutorial\FMT_M01\TUFLOW\model\gis\empty folder. </li>
	<li>Save the empty layer as <b>~~2d_bc_FMT_M01_HX_001~~.shp</b> in the FMT_tutorial\FMT_M01\TUFLOW\model\gis folder.</li>		<li>Save the empty layer as <b>2d_bc_FMT_M01_HX_001_L.shp</b> in the FMT_tutorial\FMT_M01\TUFLOW\model\gis folder.</li>
	<li>Open the <b>1D_2D_HX_Links.shp</b> GIS layer from Module_Data\Module_01\gis folder. Select all objects from within this layer, copy and paste into <b>~~2d_bc_FMT_M01_HX_001~~.shp</b>.</li>		<li>Open the <b>1D_2D_HX_Links.shp</b> GIS layer from Module_Data\Module_01\gis folder. Select all objects from within this layer, copy and paste into <b>2d_bc_FMT_M01_HX_001_L.shp</b>.</li>
	<li>Interrogate one of the lines running along the banks of the watercourse. These lines are the 1D/2D boundary links and have been assigned a type ‘HX’.</li>		<li>Interrogate one of the lines running along the banks of the watercourse. These lines are the 1D/2D boundary links and have been assigned a type ‘HX’.</li>
	<li>Interrogate one of the lines connecting the x1D node to the HX line. These are the connection or ‘CN’ lines that read the water level from Flood Modeller and transfers this to the HX line. </li>		<li>Interrogate one of the lines connecting the x1D node to the HX line. These are the connection or ‘CN’ lines that read the water level from Flood Modeller and transfers this to the HX line. </li>

Rachel: /* Method */

2016-11-11T12:11:51Z

Method

← Older revision		Revision as of 22:11, 11 November 2016
Line 7:		Line 7:

	=Method=		=Method=
	<li>Import in an empty <b>2d_bc_empty.shp</b> layer from within the FMT_tutorial\FMT_M01\TUFLOW\model\gis\empty folder ~~and save as <b>2d_bc_FMT_M01_HX_001.shp</b>.~~</li>		<li>Import in an empty <b>2d_bc_empty.shp</b> layer from within the FMT_tutorial\FMT_M01\TUFLOW\model\gis\empty folder. <li>
			<li>Save the empty layer as <b>2d_bc_FMT_M01_HX_001.shp</b> in the FMT_tutorial\FMT_M01\TUFLOW\model\gis folder.</li>
	<li>Open the <b>1D_2D_HX_Links.shp</b> GIS layer from Module_Data\Module_01\gis folder. Select all objects from within this layer, copy and paste into <b>2d_bc_FMT_M01_HX_001.shp</b>.</li>		<li>Open the <b>1D_2D_HX_Links.shp</b> GIS layer from Module_Data\Module_01\gis folder. Select all objects from within this layer, copy and paste into <b>2d_bc_FMT_M01_HX_001.shp</b>.</li>
	<li>Interrogate one of the lines running along the banks of the watercourse. These lines are the 1D/2D boundary links and have been assigned a type ‘HX’.</li>		<li>Interrogate one of the lines running along the banks of the watercourse. These lines are the 1D/2D boundary links and have been assigned a type ‘HX’.</li>

Rachel: /* Method */

2016-11-11T12:10:10Z

Method

← Older revision		Revision as of 22:10, 11 November 2016
Line 7:		Line 7:

	=Method=		=Method=
	<li>Import in an empty <b>2d_bc_empty.shp</b> layer from within the TUFLOW\model\gis\empty folder and save as <b>2d_bc_FMT_M01_HX_001.shp</b>.</li>		<li>Import in an empty <b>2d_bc_empty.shp</b> layer from within the FMT_tutorial\FMT_M01\TUFLOW\model\gis\empty folder and save as <b>2d_bc_FMT_M01_HX_001.shp</b>.</li>
	<li>Open the <b>1D_2D_HX_Links.shp</b> GIS layer from Module_Data\Module_01\gis folder. Select all objects from within this layer, copy and paste into <b>2d_bc_FMT_M01_HX_001.shp</b>.</li>		<li>Open the <b>1D_2D_HX_Links.shp</b> GIS layer from Module_Data\Module_01\gis folder. Select all objects from within this layer, copy and paste into <b>2d_bc_FMT_M01_HX_001.shp</b>.</li>
	<li>Interrogate one of the lines running along the banks of the watercourse. These lines are the 1D/2D boundary links and have been assigned a type ‘HX’.</li>		<li>Interrogate one of the lines running along the banks of the watercourse. These lines are the 1D/2D boundary links and have been assigned a type ‘HX’.</li>