1D Culverts: Difference between revisions

To limit the doubling up of expansion and contraction losses on a culvert (as 1D nwke culverts will already contain height, width, entry and exit coefficients) the 2D flow into and out of a culvert should be as representative of the culvert dimensions. You can achieve this by selecting the number of 2D cells that best matches the width/diameter of your particular culvert. The example below shows a 4m culvert that has used an SX line to select 2 x 2m grid cells to discharge to. Remember that the selection of a particular cell, when using a polyline, requires the polyline intersect the cell cross-hair - see Section 7.4 ''2D Boundaries'' within the TUFLOW manual. <br>

[[File:Culvert_SX_connection_1.JPG|border|500px]]

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Standard SX connections on the 1D network to the 2D domain where the terrain surface (cell elevations) is greater than the 1D node level will result in an <font color="red"><tt>Error 2050</tt></font><tt>.</tt> Details about this error can be found [[TUFLOW_Message_2050 | here]].<br>