The “static pressure at the exit where the flow is supersonic,” denoted as pe, refers to the pressure of the fluid at the exit of a nozzle or flow passage when the flow velocity exceeds the speed of sound. In other words, it’s the pressure at the point where the flow has transitioned into supersonic conditions.Â
![](https://i0.wp.com/todocalculator.com/wp-content/uploads/2023/08/pe-1.png?resize=173%2C104&ssl=1)
- Ratio of static pressure at exit to the inlet pressure (pe/p0)
- Inlet pressure (p0) in N/m^2
- Static pressure at exit (pe) in N/m^2