TUFLOW Message 2044: Difference between revisions

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Revision as of 09:29, 9 January 2023 view source ElizaCollison (talk \| contribs) Bureaucrats, Administrators 3,894 edits No edit summary ← Older edit		Latest revision as of 10:59, 28 October 2023 view source Pavlina Monhartova (talk \| contribs) Bureaucrats, Administrators 5,384 edits No edit summary
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Line 7: <u>[[Tutorial_M11_001_GIS_Inputs_QGIS#1D_.2F_2D_Links \| Tutorial Module 11, 1D/2D Links]]</u><br> For a HX type connection, the water level from the 1D is transferred out to the 2D cells. If the 2D cells are below the 1D bed level, when the 1D model is dry the water level is set to the invert of the channel. If this water level (invert) is transferred from the 1D to the 2D, this would result in a flooded 2D cell. This could potentially allow water to be "created" in the model.<br> This error has been known to occur in situations when an Estry node is linked to ana ~~ISIS~~Flood Modeller node, that is also linked to 2D HX cells for TUFLOW builds prior to 2012-05-AE. In these cases, the 1d_to_2d check layer showed the HX cells were incorrectly linking to Estry and ~~ISIS~~Flood Modeller rather than solely to ~~ISIS~~Flood Modeller. \|suggestions=The 2D cell elevation controls when water can "spill" from the 1D to the 2D. Thick breaklines should be used to ensure that this elevation is correctly set in the 2D. This is documented in the tutorial model for 1D/2D linking here: <u>[[Tutorial_M11_001_GIS_Inputs_QGIS#2D_Breaklines \| Tutorial Module 11, 2D breaklines]]</u>.<br> ~~ISIS~~Flood Modeller-TUFLOW models linked via the ~~ISIS~~Flood Modeller-TUFLOW-PIPE link should be simulated with build 2012-05-AE or later where the problem with incorrect linking of nodes has been resolved.