MIKE Flood to TUFLOW: Difference between revisions
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<li> X = xllcorner + j * cellsize
<li> Y = yllcorner + k * cellsize<br>[[File: MIKE-JK-XY_conv.PNG|350px|]]
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The type of the boundary is defined in the <b>Hydrodynamic Parameters</b> >> <b>Boundary</b> tab. This tab specifies the whether the boundary is ‘Flux’ (QT), ‘Level’ (HT), or ‘Rating Curve’ (HQ), as well as whether the data is a time series (type 0 data file) or constant.
The name of the boundary can be found following the below steps:
* Clicking the <b>‘…’</b> button to browse
* Viewing <b>Item</b> which corresponds to the boundary name
The Upstream boundary can be digitised in TUFLOW as a 2d_bc (type ‘HT’), or as a 2d_SA polygon. For more discussion on selecting an appropriate upstream boundary type, please see the discussion at the bottom of the page.
==Source Boundaries==
The location of source boundaries can be found in the MIKE21 control file (.m21) in the <b>Basic Parameters</b> >> <b>Source and Sink</b>. The location of the boundaries are specified as a point object using the local (j, k) coordinate system. These are required to be converted to absolute coordinates so an identical boundary location can be digitised in TUFLOW. The conversion process can be undertaken using identical steps as performed with converting upstream and downstream boundaries.
It is recommended that the source boundary point from MIKE be converted to a 2d_SA polygon in TUFLOW. The 2d_SA polygon should be enlarged to encompass a larger region such that it is able to apply flow to more than one cell. This is considered to give a more stable and accurate representation of flow distribution to the model. More information on how 2d_SA polygons distributes flow can be found in Section 7.4.2 of the <u>[https://www.tuflow.com/Download/TUFLOW/Releases/2016-03/TUFLOW%20Manual.2016-03.pdf TUFLOW Manual]</u>.
==Inflow Boundaries==
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