The “static pressure at the throat where the flow is sonic,” denoted as pt, refers to the pressure of the fluid at the narrowest cross-sectional area of a nozzle or flow passage where the flow velocity has reached the speed of sound. This condition is often referred to as “sonic flow” or “choked flow.”
- Ratio of static pressure at sonic flow to the inlet pressure (p*/p0)
- Inlet pressure (p0) in N/m^2
- Static pressure at the throat (pt) in N/m^2