Abstract
An overexpanded flow in a two-dimensional supersonic nozzle with 10 degree half-angle has been experimentally investigated with schlieren observation and wall static pressure measurement, and the experimental results have been compared with the one-dimensional inviscid theory. The characteristics of nozzle flow for various pressure ratios across the nozzle are made clear The range of pressure ratio for the overexpanded flow by the inviscid theory is different from the present experimental results. This is due to the fact that the pseudo-shock is formed in real flows instead of the normal shock.
