I have some doubt on fluid mechanics that need some confirmation. I am on the section that discusses about compressible flow and the effect of variation of flow cross section area.
It stated that that an isentropic flow would obey conservation of mass and what I wonder about is that any chance that an isentropic flow would disobey conversation of mass?
What made me wondering this was I was considering the mass flow rate of isentropic flow in converging-diverging nozzle. If my understanding towards isentropic flow is not wrong, the mass flow rate of an isentropic flow would always be constant no matter of what position it is in the nozzle.