Hydraulic design turns the flows and hydraulic profile into real pipework, pumps and valves — pipe sizing by Darcy–Weisbach, pump selection on the system curve, valve specification and a closed pressure-drop budget from inlet to outlet.
The work that turns the brief into defensible engineering
Diameters set by Darcy–Weisbach friction loss and velocity limits — fast enough to self-scour, slow enough to control head loss and water hammer.
Duty point found where the pump curve meets the system curve, with NPSH available checked against required to rule out cavitation.
Control and isolation valves sized on flow coefficient (Cv) with minor losses from bends and fittings carried into the head budget.
A reconciled head budget across the whole route so the selected pump delivers the design flow at every operating point.
Friction head loss follows Darcy–Weisbach, hf = f·(L/D)·(v²/2g), where the friction factor f comes from the Reynolds number and relative roughness (Colebrook / Moody). Summing pipe friction and the minor losses from fittings builds the system curve; the pump runs where that curve crosses its characteristic. Two checks make or break the design: velocity must stay within band (typically ~0.9–2.4 m/s for these duties) to self-scour without hammer, and the NPSH available must exceed the pump’s NPSH required with margin, or the pump cavitates. Getting these right is the difference between a plant that delivers design flow quietly and one that throttles, surges or fails on its suction.
Transient analysis where rapid valve or pump events could otherwise damage the pipework.
Confirming the network still behaves at minimum flow, not just at peak.
Suction layout and submergence designed so NPSH is satisfied across the operating envelope.
The complete bespoke equipment design methodology.
Read MoreA companion step in the design methodology.
Read MoreA companion step in the design methodology.
Read MoreA companion step in the design methodology.
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