# Gas-nozzle flow screening
# Scope: Ideal-gas choked mass flow through a throat; upstream stagnation data.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

pressure = 300 kPa
temperature = 300 K
area = 1 mm^2
gamma = 1.4
gasConstant = 287 J/(kg*K)
backPressure = 100 kPa

criticalRatio := (2/(gamma+1))^(gamma/(gamma-1))
massFlow := area*pressure*sqrt(gamma/(gasConstant*temperature))*(2/(gamma+1))^((gamma+1)/(2*(gamma-1))) [g/s]

check choked applicability: backPressure/pressure <= criticalRatio

scenario alternative: pressure = 240 kPa