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ADCIRC Pipes/Weir Barriers


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Thanks, I already have posted on the list. I have also been looking at the code, and it is just wrong. The code asks for pipe diameters and then calculates a Volume flux through the pipe for the given head difference. Unfortunately, the rest of the flux values used across the elements are in L^2/T rather than L^3/T and are then effectively multiplied by the element edge length, I know it is actually integrated but the effect is much the same. This means that in a simple test I ran, 3 1m diamater pipes managed to allow enough water to pass so that using a 6m tidal range a 200 sq km basin could have an internal tidal range of about 3-4m. To get round this I have inserted a pre-multiplier which allows me to divide by the element length and multiply by the effective number of pipes I want. A crude but simple fix for now.



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