TUFLOW 1D Channels and Hydraulic Structures: Difference between revisions
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<li>Set the model up your ESTRY model using a dummy downstream level boundary (e.g. a HQ boundary with no name, an error will be reported however the required check file will have been produced, otherwise any boundary will work) and run the model in test model (-t) so that check files are produced.
<li>From the check folder, open the '''*_1d_ta_tables.csv''' file.
<li>Find the entry for the most downstream cross-section (directly upstream of the 1d_bc HQ point). The '''*_1d_ta_tables.csv''' will contain a table of hydraulic parameters. The K entry highlighted is the cross-section conveyance in m<sup>3</sup>/s and is calculated as:
K = 1/n * A * R<sup>2/3</sup
Where
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<li>Determine a representative slope (S), this could be taken from the last two cross-sections.
<li>Calculate the downstream Discharge (this is the same as calculated discharge from Mannings equation):
Q = K * SQRT(S)
Where:
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