MIKE Flood to TUFLOW: Difference between revisions
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==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> tab. 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>.
The name of the boundary can be found from <B>Hydrodynamic Parameters</b> >> <b>Boundary</b> tab.<br>[[File: MIKE21-HP-Source-Names.PNG|750px|]]
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The location of the 1D / 2D boundaries can be found in the MIKE Flood control file (.couple) under the <b>Link Definitions</b> tab. The (X, Y) coordinates specify the vertices of a polyline that can be digitised in TUFLOW using either ‘SX’ or ‘HX’ connections.<br>[[File: MIKEFlood-Linkages.PNG|750px|]]
More information on 1D/2D linking in TUFLOW can be found in Section 8 of the <u>[https://www.tuflow.com/Download/TUFLOW/Releases/2016-03/TUFLOW%20Manual.2016-03.pdf TUFLOW Manual]</u>.
=Creating a Boundary Control Database from MIKE=
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