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Re: SWMM 5 - Inlet Parameters?
Wesley,
Possible answers to your questions:
1. SWMM usually has the convention that the flow from a sub-catchment
goes to one inlet representing the drainage collection point. You could
always make the sub-watersheds small enough so that there is a physical
match between the contributing area of the inlet and number of inlets.
2. In SWMM 5 will be able model the inlet capacity better because SWMM 5
will have Control Rules that govern the behavoir of a link. For example,
if you are modeling the gutter flow to an inlet and actually have the
street gutter in your model you will be able to switch between orifice
flow and weir flow in the inlet as the amount of inflow increases. If
you are modeling the actual inlets on the street it should be possible
to model the HEC-22 inlet capacity curves and cause the the bypass flow
to travel down to the next inlet using the links and the Control Rules.
An example (forthcoming) will illustrate this better.
3. SWMM 5 definitely gives you better graphical and tabular information
than SWMM 4 on the amount of flow lost from the system. You will also
have the ability to simulate ponded water over the inlets if this makes
sense in your network.
Regards,
Bob Dickinson
DickinsonRE@CDM.COM
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Linear Mode
