Document the model's scope
A simulator should support parameter exploration and clearly document its limits. Pirani behavior depends on pressure regime, gas properties, sensor geometry, temperature, accommodation, and the reference calibration.
Display active parameters
The interface displays the active gas mixture, geometry, temperature, and model contributions beside the resulting curve. These values help users identify which parameters account for a change in the result.
pythonq_gas = (alpha * pressure) / (1.0 + bridge * pressure)
indicated = invert_nitrogen_curve(q_gas, geometry)
correction = pressure / indicated
Export results with assumptions
Interactive views support parameter exploration, while CSV sweeps support review, comparison, and design documentation. Exported data should include the configuration and assumptions used to produce each curve.
- Show the molecular and viscous contributions separately.
- Keep source and assumption notes close to the controls.
- Export the configuration with every sweep.
- Distinguish qualitative model results from calibrated measurements.
Documented parameters, sources, and limits allow engineers to review and compare model results.