Link Results Data Fields (SWMM)
All results fields are displayed on the results grid and on the Link Property Sheet while viewing a replay of a simulation.
Time varying results are shown with the field name in an alternate colour on the grid. Non time varying results have the field name in the normal black type.
Database Table Name: __IWR_Link
Hydraulic results
Time-varying results
Conduits
|
Field name |
Help text |
Attribute |
|
|---|---|---|---|
| Flow | Flow rate | Q | FLOW |
| Depth | Average water depth | Y | DEPTH |
| Velocity | Average flow velocity in the conduit | V | VELOCITY |
| HGL |
Average hydraulic head of the conduit - determined as a maximum of the upstream node head and the downstream node head |
HEAD | HGL |
| Flow volume | Flow volume in the conduit | VO | FLOW_VOLUME |
| Flow class | Type of conduit flow | FLOW_CLASS | |
| Capacity (depth/max depth) | Ratio of water depth in the conduit to full depth of the conduit | CAPACITY | |
| Surcharged | Ratio of surcharged depth to full depth of the conduit | SURCHARGED | |
| Entry loss | Loss calculated as a function of the conduit flow velocity and user defined loss coefficients | HEAD | ENTRY_LOSS |
| Exit loss | Loss calculated as a function of the conduit flow velocity and user defined loss coefficients | HEAD | EXIT_LOSS |
Pumps
|
Field name |
Help text |
Attribute |
|
|---|---|---|---|
| Flow | Flow rate | Q | FLOW |
| Depth | Average water depth | Y | DEPTH |
| Upstream head | Head at upstream node | HEAD | UPSTREAM_HEAD |
| Downstream head | Head at downstream node | HEAD | DOWNSTREAM_HEAD |
| Head gain |
Difference between head at upstream and downstream nodes |
Y | HEAD_GAIN |
| Speed ratio | Ratio of actual pump speed divided by the design (full) pump speed | SPEED_RATIO | |
| Useful power | Power available by the head gain of water flowing through a link | Y | USEFUL_POWER |
Orifices, weirs and outlets
For all orifices, weirs and outlet types of links:
|
Field name |
Help text |
Attribute |
|
|---|---|---|---|
| Flow | Flow rate | Q | FLOW |
| Depth | Average water depth | Y | DEPTH |
Maxima results
Conduits
|
Field name |
Help text |
Attribute |
|
|---|---|---|---|
|
Max Flow |
Maximum water depth value during simulation |
Y | DEPTH |
| Max Capacity |
Maximum Capacity (depth/max depth) value experienced during simulation |
CAPACITY | |
| Max Velocity |
Maximum velocity experienced in link during simulation |
V | VELOCITY |
Pumps, orifices, weirs and outlets
For all pumps, orifices, pumps, weirs and outlet types of links:
|
Field name |
Help text |
Attribute |
|
|---|---|---|---|
|
Max Flow |
Maximum water depth value during simulation |
Y | DEPTH |
Summary results (non time-varying)
Pumps
|
Field name |
Help text |
Attribute |
|
|---|---|---|---|
| Min flow | Maximum flow experienced in a link during simulation | Q | MIN_FLOW |
| Percentage utilised |
Percentage of simulation time that the pump was on (flow greater than zero) |
PERCENT_UTILISED | |
| Power usage |
Power used by the pump during the simulation duration |
POWERUSAGE | POWER_USAGE |
