Dear All, I have designed a water supply system. In this system there are four pumping stations. (Fixed location). I have assigned my desired flow and head to each pump and demand at every junctions. When I have run my model, It's giving me negative pressure in few junctions in distribution lines where elevations are higher than reservoir's elevation as there are many high and low points in whole system. Please suggest me how to solve this negative pressure. Is this problem related to boundary conditions ? Thanks & Regard,
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