LT-Spice sub-circuit for pipe networks
The model uses the Hazen-Williams equation to model the flow through a length of pipe, given the head-loss. Head-loss is represented by a drop in voltage, and flow is represented by the current through the model.
The model properties are:
| Property | Unit | Default | Parameter |
|---|---|---|---|
| Head loss | metres of water | — | — |
| Flow | litres per second | — | — |
| Length | metres | 100 m | length |
| Diameter | millimetres | 110 mm | dia |
| Roughness | — | 140 | CH |

