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katebradbrook

Viewing where 2d weir flow used?

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Hi Kate,

Map output data type “R” (flow regime) can be specified to visualise where the weir flow is being calculated.

The output value is ‑1.5 for broad-crested weir flow; 0 (zero) for normal (sub-critical flow with momentum); greater than 1 for upstream controlled friction flow (eg. supercritical flow); and ‑1 for flow through a flow constriction when the deck is submerged.

Please note that when using the default cell corner approach, the flow regime is a weighted average of the flow regimes at the four adjoining cell mid-sides, which can be misleading. Using the Map Output Format == SMS HIGH RES option will output the exact flow regime occurring at the cell mid-sides.

 

Kind Regards,

Pavlina

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