1D Culverts: Difference between revisions
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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]]
<br>
<div><ul>
<li style="display: inline-block;"> [[File:SX_connection_1.JPG|thumb|none|600px|2D SX connection]] </li>
<li style="display: inline-block;"> [[File:SX_connection_1LS.JPG|thumb|none|600px|1D channel to 1D bridge to 2D channel]] </li>
</ul></div>
<br>
<div><ul>
<li style="display: inline-block;"> [[File:SX_connection_2.JPG|thumb|none|600px|1D channel to 1D bridge to 1D channel]] </li>
<li style="display: inline-block;"> [[File:SX_connection_2LS.JPG|thumb|none|600px|1D channel to 1D bridge to 2D channel]] </li>
</ul></div>
<br>
<div><ul>
<li style="display: inline-block;"> [[File:SX_connection_3.JPG|thumb|none|600px|1D channel to 1D bridge to 1D channel]] </li>
<li style="display: inline-block;"> [[File:SX_connection_3LS.JPG|thumb|none|600px|1D channel to 1D bridge to 2D channel]] </li>
</ul></div>
=Flow Regimes=
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