FMA Challenge 3: Difference between revisions

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Revision as of 16:28, 14 December 2017 view source Mitch3007 (talk \| contribs) Bureaucrats, Administrators 1,585 edits →Topography and Bed Resistance ← Older edit		Latest revision as of 14:38, 6 January 2023 view source ElizaCollison (talk \| contribs) Bureaucrats, Administrators 3,894 edits →Relevant Tutorials
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Line 11: Understanding the Green and Ampt infiltration method and USDR soil types.<br> ~~Data~~DData for this model is provided ~~via~~in ~~ZIP~~a ~~compressed~~variety ~~file~~of ~~available~~different ~~[http://www.tuflow.com/Tuflow%20Tutorial%20Models.aspx~~GIS compatible onformats. Download the ~~TUFLOW~~dataset ~~Downloads~~that ~~Page]~~matches ~~under~~the ~~'Demo~~GIS ~~Models'.<br>~~software you are using: [https://www.tuflow.com/Download/TUFLOW/Demo_Models/FMA_Challenge_Model_3_QGIS.zip QGIS Data Download] [https://www.tuflow.com/Download/TUFLOW/Demo_Models/FMA_Challenge_Model_3_Mapinfo.zip MapInfo Data Download] [https://www.tuflow.com/Download/TUFLOW/Demo_Models/FMA_Challenge_Model_3_ArcGIS.zip ArcGIS Data Download] =Relevant Tutorials= Other tutorials that are relevant to this challenge that may help refresh your memory are as follows:<br> 1D-2D Linking - <u>[[~~Tutorial Module02~~Tutorial_M03\|Tutorial Module 23]]</u> 1D Nested Channel - <u>[[~~Tutorial Module04~~Tutorial_M11\|Tutorial Module 411]]</u> Running ~~Events and~~ Scenarios - <u>[[~~Tutorial Module10~~Tutorial_M08\|Tutorial Module 108]]</u> Running Events - <u>[[Tutorial_M09\|Tutorial Module 09]]</u> <br> Line 93 ⟶ 97: ==Sensitivity Creek Manning's n Test (Scenario 100ft n0.1)== As discussed in the Manning’s n table above, the main creek n value of 0.20 is considered very high, especially in the lower reaches of the study area. A sensitivity analysis was carried out by lowering all the Manning’s n values in the main channel (~~modeled~~modelled as 1D cross-sections) to 0.10. The image below shows the flood depths and extent for the two non-infiltration simulations at 100ft resolution (left with channel 'n' = 0.2, right with channel 'n' = 0.1). Some significant deviations in flood extent can be observed, ~~particually~~particularly ~~soth~~south of the main channel. This can be largely attributed to the higher conveyance in the channel for the 'n'=0.1 case. <br> [[File:FMA3_3.jpg\|600px]][[File:FMA3_4.jpg\|600px]]<br>