Check Files 1d xsl: Difference between revisions
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| Depth||The depth at the top of section. i.e. the elevation at the top - the elevation at the bed.
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| Top_Flow_Width||The effective flow width at the top of the cross section. See the <u>[[Check_Files_1d_ta_tables | _ta_tables]]</u> check file for the effective flow width at each elevation. Note, the effective width is calculated based on the Manning’s n value, if the Manning’s n values differ throughout the channel, the width is proportionally adjusted so the whole cross-section uses a single Manning’s n.
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| Top_Storage_Width||The storage width at the top of the cross-section. See note below for how this is calculated when using negative Manning's n or M values to deactivate parts of cross-sections.
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| Top_Flow_Area||The flow area at the top of the cross-section.
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==Top_Storage_Width calculation when portion of cross-section is deactivated==
Every cross section is being divided into vertical parallel channels, where the bounds are midway in between the XZ points. Where outer parts of the channel are being made inactive (e.g. with Manning’s n -1, for more information see <u>[[TUFLOW_1D_Channels_and_Hydraulic_Structures#How_do_negative_.22M.22.2C_.22N.22_and_.22R.22_values_deactivate_1D_cross-sections.3F | here]]</u>) TUFLOW will place vertical walls at the midway point between the XZ points where the cross-section is inactive. The height limit is the highest active XZ point.
The below example shows the calculated top storage width in red. In blue is the full cross section, orange is the active part of the channel, green is highest elevation of the not ignored part of the channel and grey are the vertical bounds.
[[File:Top storage width 1.png | 700px]]<br><br>
This can become more complicated if the highest point in the active part of the channel has a lower adjacent inactive point. In this case, the width calculation considers half of the distance between these two XZ points as well, as shown below.
[[File:Top storage width 2.png | 700px]]<br>
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