Environmental Engineering Reference
In-Depth Information
Finally, going back to the PDD algorithm being the heart of all reliability considerations, the
room exists for further improvement if that one is to be applied in networks with more
extreme topographies. The current algorithm has proven to be very effective in scenarios that
avoid negative pressures. None of the two proposed measures, to set the negative node
demands to zero or close the pipes with connected to the nodes with negative pressures, has
been fully satisfactory, if the negative pressure would occur in the PDD mode of hydraulic
calculation.
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