Pipe-Network Modelling

A network model predicts how water moves through a system. Solving continuity and energy across the pipe network gives pressures, flows, velocities and headlosses at every node and pipe — sizing pipes and pumps, finding bottlenecks, and confirming adequate pressure and velocity throughout the plant or distribution system.

Pipe-network modelling — steady-state hydraulic analysis of pressures, flows and headlosses across a treatment-plant or distribution pipe network.

Hydraulic modelling underpins reliable water and wastewater conveyance: it predicts how flow, head and pressure behave through pipes, channels, pumps and structures, so a design can be proven on paper before steel and concrete commit it. Whether the question is pump selection, surge, or whether a channel will surcharge, the model turns governing equations into actionable design margins.

Pressurised networks are solved from continuity and energy, with friction losses from Darcy-Weisbach or Hazen-Williams and minor losses at fittings; the system curve so produced is intersected with the pump curve to fix the duty point. Getting this right avoids the classic failures — a pump run far from its best-efficiency point, cavitation from inadequate NPSH, or a network that cannot deliver design flow at the far node.

Open-channel hydraulics is governed instead by Manning's equation and specific-energy concepts, distinguishing sub- and super-critical flow, locating hydraulic jumps, and sizing channels and weirs so they pass design storm flow with adequate freeboard. Across both regimes, the same care over roughness, geometry and boundary conditions separates a model that protects the asset from one that merely decorates a report.