Turbocharger surge margin - the distance between operating point and surge line on the compressor map.
Formula
$$ SM = (\dot m_{op} - \dot m_{surge}) / \dot m_{op} $$Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $\dot m$ | Air mass flow | kg/s | T/C performance curves |
Sources
- ABB Turbocharging Handbook.