The simulation of flow in the divergent nozzle

Abstract

The divergent nozzle is an adjutage. An input tube section is tapering and an output tube section is broadening. It enables an expansion of an effluent gas on pressure lower than critical back pressure, and thereby the increase of the velocity (leaving) on speed greater than critical. The gas running through the expansion nozzle is izoentropic (the size of its entropia is almost invariable). Practical use of the flow in expansion nozzle is at solving flow in the adjutage.