TUFLOW 2D Hydraulic Structures: Difference between revisions
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<li> Flow widths (conversely, blockage factors) and flow height should be updated in the <font color="blue">2d_lfcsh_...</font> inputs. This information is used to refine the structures flow area when the model grid resolution isn't fine enough to accurately do so already.
<li>The head loss across key structures should be reviewed, and if necessary, benchmarked against other methods (Recorded calibration data, other model solutions). Note that a well-designed 2D model will be more accurate than a 1D model, provided that any “micro” losses are incorporated.</li>
<li>TUFLOW check files should also be reviewed to confirm that the correct form losses are being applied. The <u>[[Check_Files_2d_lfcsh_uvpt | 2d_lfcsh_uvpt_check file]]</u> can be used to review the location of the applied lfcsh and its attributes.</li>
<li>The flow area through the structure should also be reviewed.If the overall structure flow area is not correct, then the velocities within the structure will not be correct and therefore the energy losses due to the changes in velocity direction and magnitude and additional form losses will not be well modelled.
* Digitise a Plot Output QA line (<font color="blue">Read GIS PO</font> <font color="red">==</font> 2d_po_...) through the structure from bank to bank, and use this output to cross-check the flow area of the 2D FC cells is appropriate (the QA line will take into account any adjustments to the 2D cells due to FC obverts and changes to the cell side flow widths). </li>
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