Prompt: The gas flow is isentropic (that is, it has constant entropy, friction forces and dissipative losses are not taken into account) and adiabatic (that is, heat is not supplied or removed). The gas flow is stationary and one-dimensional, that is, at any fixed point of the nozzle, all flow parameters are constant in time and change only along the nozzle axis, and at all points of the selected cross section the flow parameters are the same, and the gas velocity vector is everywhere parallel to the symmetry axis of the nozzle. The gas mass flow rate is the same in all cross sections of the flow. The influence of all external forces and fields (including gravitational) is negligible. The symmetry axis of the nozzle coincides with the spatial coordinate
Style: Cinematic