DRAFT: Create a 'cut down' model: Difference between revisions

* Where the area of interest for a cut down model is hydraulically controlled by a downstream interaction such as backwater effects that may depend on relative flows between a tributary and main river, which may present challenges in design event modelling and critical storm selection.<br>

 

* Extract flow from the original model via a cross section perpendicular to the flow direction, digitised left to right looking downstream.

* Ideally this is sourced from a 2d_po plot output line already configured in the original model. Post-processed flow can also be extracted from the temporal .xmdf map output in the QGIS TUFLOW plugin, however this will be limited to the map output interval set in the original model, which is typically less than the timeseries output interval that is applied to 2d_PO plot outputs.

* Enforcing an upstream water level (2d_bc HT) is also possible, extracted from the original model, however this approach is more likely to introduce changes in inflow volume and is generally not recommended.

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* Enforcing a 2d_bc head-time (HT) water level boundary is typical. 

* Extract water levels from the original model. Ideally this is sourced from a 2d_po plot output point already configured in the original model. Post-processed water levels can also be extracted from the temporal .xmdf map output in the QGIS TUFLOW plugin, however this will be limited to the map output interval set in the original model, which is typically less than the timeseries output interval that is applied to 2d_PO plot outputs.

=== Domain boundary ===

 

 

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