Alternate Options for SWMM6
Pump Characteristic Curve
Pump Characteristic Curve
Pump characteristic curves are usually presented graphically describing the relationship between pump head, hp, and the flow rate, Q using either an exponential equation or 3-point quadratic form. The exponential pump characteristic curve is given as
where hc = the pump cutoff head … Read the rest
Inertia of Pumps and Motors
The combined inertia of pumps and motors driving them, including the connecting shafts and couplings, is required for transient analysis associated with the starting and stopping of pumps. The equations provided below are intended to be used as an initial guide to the inertia values … Read the rest
Note for SWMM6 - this may be useful for any discussion of a Slot in SWMM6. A Preissmann Slot is used in InfoWorks ICM, XPSWMM and one of the solutions of SWMM4
Wave Speed
The wave speed, c, is influenced by the elasticity of the pipe wall. For a … Read the rest
3.11 Weirs in Innovyze H2OCalc
Discharge in channels and small streams can be conveniently measured by using a weir. Weirs can be categorized in to two: sharp crested and broad crested.
Sharp-Crested Weir
A sharp-crested weir is a vertical plate placed in a channel that forces the liquid to flow … Read the rest
3.6 Pump Calculations in Innovyze H2OCalc
A Pump is used to augment head to the system (water distribution systems or waste water collection systems), and helps to lift water from low lying locations to a top of a hill or reservoir so that water could flow by gravity. The following … Read the rest