Mach 2.0 Free Jet Nozzle Flow Visualization

This video shows a free jet, supersonic nozzle with an exit Mach number of 2.0. Schlieren imaging shows several flow states that the nozzle operates at as the ratio between the stagnation and ambient pressure varies. The nozzle starts as underexpanded before moving to perfectly expanded, overexpanded, and shock-at-exit states. This nozzle is part of an undergraduate lab at the University of Texas at Arlington.