Flow Routing in InfoSWMM and Innovyze SWMM Products
Flow Routing Flow routing within a conduit link in InfoSWMM H 2 OMap SWMM InfoSWMM SA is governed by the conservation of mass and momentum equations for gradually varied, unsteady flow (i.e., the Saint Venant flow equations). The InfoSWMM H 2 OMap SWMM InfoSWMM SA user has a choice on the level of sophistication used to solve these equations: Steady Flow Routing Kinematic Wave Routing Dynamic Wave Routing Steady Flow Routing Steady Flow routing represents the simplest type of routing possible (actually no routing) by assuming that within each computational time step flow is uniform and steady. Thus it simply translates inflow hydrographs at the upstream end of the conduit to the downstream end, with no delay or change in shape. The Manning equation is used to relate flow rate to flow area (or depth). This type of routing cannot account for channel storage, backwater effects, entrance/exit losses, flow reversal o...