Therefore, it can be concluded that the divergent part of a convergent-divergent nozzle
contributes to the choking of initially subcooled flashing flow.
Objective: The expansion of a dilute gas through a gasdynamics convergent-divergent nozzle
can occur in three different regimes, depending on the inlet and discharge conditions and on the gas: via a fully subsonic expansion, via a subsonic-supersonic or via a subsonic-supersonic-subsonic expansion embedding a compression shock wave within the divergent portion of the nozzle.
The tunnel was configured with a convergent-divergent nozzle
that resulted in a free-stream Mach number of 2.
In order to investigate the influence of the inlet swirl on the nozzle restrictiveness and visualize the two-phase flow expanded in the convergent-divergent nozzle, a transparent nozzle with controllable swirl at the nozzle inlet has been designed and manufactured, as shown in Figure 6.
A pumped-refrigerant-loop was used for adjustment of test conditions to investigate the influence of inlet swirl on the two-phase flow expanded in the convergent-divergent nozzle.
Figure 10 shows visualization of the flow expanded in the convergent-divergent nozzle.
A convergent-divergent nozzle utilizing swirl control was designed and manufactured for experiments with R134a.
Shock associated noise of supersonic jets from convergent-divergent nozzles
, Journal of Sound and Vibration 81(3): 337-358.