Abstract: | The possibility of critical gas flow from Laval nozzles in overexpanded regimes behind a bridge shock is investigated theoretically
with and without allowance for viscous mixing at the edge of the jet. The influence of the mixing effect and flow separation
from the nozzle walls on the critical flow conditions is analyzed. It is shown experimentally that these regimes coincide
closely with the displacement of the normal shock to the nozzle exit and cessation of the emission by the jet of a discrete
tone.
Mariupol. Translated from Izvestiya Rossiiskoi Akademii Nauk, Mekhanika Zhidkosti i Gaza, No. 4, pp. 180–184, July–August,
1994. |