Start with the process brief: fluid properties (density, viscosity), phase behavior (single-phase liquid, slurry, or gas-liquid dispersion), temperature, and vessel geometry. In the spreadsheet, these inputs live on a single, well-labeled sheet with dropdowns and inline notes — the human-friendly front door to the calculation engine.
This is where most generic spreadsheets fail. An agitator shaft must avoid resonant vibration. agitator design calculation xls repack