Once your network is built, you can run a hydraulic simulation to calculate flow, pressure, and other key parameters.

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1. Click the Simulate button (or use the shortcut Shift+Enter / ⇧Enter).
2. If there are missing connections or other issues, an error message will appear.
3. If the model has changed since the last run, the status bar will show "Simulation outdated", prompting a re-run.
4. When successful, the status bar updates and results become available.

If there are any issues, an error message will guide you on what to fix. You can make adjustments— like changing a pipe's diameter or a junction's demand — and simply click Simulate again to see the updated results.